HUGE_VAL __infinite(1.0)

Description

A positive double expression, not necessarily representable as a float. Used as an error value returned by the mathematics library. HUGE_VAL evaluates to positive infinity on systems supporting the ANSI/IEEE Std 754:1985 standard.

FP_ILOGB0 (-__INT_MAX)

Description

The value of FP_ILOGB0 shall be either INT_MIN or - INT_MAX.

FP_ILOGBNAN __INT_MAX

Description

The value of FP_ILOGBNAN shall be either INT_MAX or INT_MIN.

HUGE_VALF (float)HUGE_VAL

Description

A positive float constant expression. Used as an error value returned by the mathematics library.

HUGE_VALL (long double)HUGE_VAL

Description

A positive long double constant expression. Used as an error value returned by the mathematics library.

NAN nanvalf()

Description

A constant expression of type float representing a quiet NaN. This symbolic constant is only defined if the implementation supports quiet NaNs for the float type.

MATH_ERRNO 1

Description

macro shall expand to the integer constants 1

MATH_ERREXCEPT 2

Description

macro shall expand to the integer constants 1

math_errhandling MATH_ERREXCEPT

Description

Macro shall expand to an expression that has type int and the value MATH_ERRNO, MATH_ERREXCEPT, or the bitwise-inclusive OR of both

FP_INFINITE 0x01

Description

Macro shall be defined for number classification. They represent the mutually-exclusive kinds of floating-point values. They expand to integer constant expressions with distinct values. Additional implementation-defined floating-point classifications, with macro definitions beginning with FP_ and an uppercase letter, may also be specified by the implementation.

FP_NAN 0x02

Description

Macro shall be defined for number classification. They represent the mutually-exclusive kinds of floating-point values. They expand to integer constant expressions with distinct values. Additional implementation-defined floating-point classifications, with macro definitions beginning with FP_ and an uppercase letter, may also be specified by the implementation.

FP_NORMAL 0x04

Description

Macro shall be defined for number classification. They represent the mutually-exclusive kinds of floating-point values. They expand to integer constant expressions with distinct values. Additional implementation-defined floating-point classifications, with macro definitions beginning with FP_ and an uppercase letter, may also be specified by the implementation.

FP_SUBNORMAL 0x08

Description

Macro shall be defined for number classification. They represent the mutually-exclusive kinds of floating-point values. They expand to integer constant expressions with distinct values. Additional implementation-defined floating-point classifications, with macro definitions beginning with FP_ and an uppercase letter, may also be specified by the implementation.

FP_ZERO 0x10

Description

Macro shall be defined for number classification. They represent the mutually-exclusive kinds of floating-point values. They expand to integer constant expressions with distinct values. Additional implementation-defined floating-point classifications, with macro definitions beginning with FP_ and an uppercase letter, may also be specified by the implementation.

fpclassify (x) ((sizeof (x) == sizeof (float)) ? __fpclassifyf(x) \
    : (sizeof (x) == sizeof (double)) ? __fpclassifyd(x) \
    : __fpclassifyl(x))

Description

The math.h header shall define the following macros, where real floating indicates that the argument shall be an expression of real floating type

Parameters

isfinite (x) ((sizeof (x) == sizeof (float)) ? __isfinitef(x)   \
    : (sizeof (x) == sizeof (double)) ? __isfinite(x)   \
    : __isfinitel(x))

Description

The math.h header shall define the following macros, where real floating indicates that the argument shall be an expression of real floating type

Parameters

isinf (x) ((sizeof (x) == sizeof (float)) ? __isinff(x) \
    : (sizeof (x) == sizeof (double)) ? __isinf(x)  \
    : __isinfl(x))

Description

The math.h header shall define the following macros, where real floating indicates that the argument shall be an expression of real floating type

Parameters

isnan (x) ((sizeof (x) == sizeof (float)) ? __isnanf(x)     \
    : (sizeof (x) == sizeof (double)) ? __isnan(x)  \
    : __isnanl(x))

Description

The math.h header shall define the following macros, where real floating indicates that the argument shall be an expression of real floating type

Parameters

isnormal (x) ((sizeof (x) == sizeof (float)) ? __isnormalf(x)   \
    : (sizeof (x) == sizeof (double)) ? __isnormal(x)   \
    : __isnormall(x))

Description

The math.h header shall define the following macros, where real floating indicates that the argument shall be an expression of real floating type

Parameters

isgreater (x, y) (!isunordered((x), (y)) && (x) > (y))

Description

The math.h header shall define the following macros, where real floating indicates that the argument shall be an expression of real floating type

Parameters

isgreaterequal (x, y) (!isunordered((x), (y)) && (x) >= (y))

Description

The math.h header shall define the following macros, where real floating indicates that the argument shall be an expression of real floating type

Parameters

isless (x, y) (!isunordered((x), (y)) && (x) < (y))

Description

The math.h header shall define the following macros, where real floating indicates that the argument shall be an expression of real floating type

Parameters

islessequal (x, y) (!isunordered((x), (y)) && (x) <= (y))

Description

The math.h header shall define the following macros, where real floating indicates that the argument shall be an expression of real floating type

Parameters

islessgreater (x, y) (!isunordered((x), (y)) && \
                    ((x) > (y) || (y) > (x)))

Description

The math.h header shall define the following macros, where real floating indicates that the argument shall be an expression of real floating type

Parameters

isunordered (x, y) (isnan(x) || isnan(y))

Description

The math.h header shall define the following macros, where real floating indicates that the argument shall be an expression of real floating type

Parameters

signbit (x) ((sizeof (x) == sizeof (float)) ? __signbitf(x) \
    : (sizeof (x) == sizeof (double)) ? __signbit(x)    \
    : __signbitl(x))

Description

The math.h header shall define the following macros, where real floating indicates that the argument shall be an expression of real floating type

Parameters

M_E 2.7182818284590452354

Description

Defines the Value of e

M_LOG2E 1.4426950408889634074

Description

Defines the Value of log2e

M_LOG10E 0.43429448190325182765

Description

Defines the Value of log10e

M_LN2 0.69314718055994530942

Description

Defines the Value of loge2

M_LN10 2.30258509299404568402

Description

Defines the Value of loge10

M_PI 3.14159265358979323846

Description

Defines the Value of pi

M_PI_2 1.57079632679489661923

Description

Defines the Value of pi/2

M_PI_4 0.78539816339744830962

Description

Defines the Value of pi/4

M_1_PI 0.31830988618379067154

Description

Defines the Value of 1/pi

M_2_PI 0.63661977236758134308

Description

Defines the Value of 2/pi

M_2_SQRTPI 1.12837916709551257390

Description

Defines the Value of 2/sqrt(pi)

M_SQRT2 1.41421356237309504880

Description

Defines the Value of sqrt(2)

M_SQRT1_2 0.70710678118654752440

Description

Defines the Value of 1/sqrt(2)

MAXFLOAT ((float)3.40282346638528860e+38)

Description

Value of maximum non-infinite single-precision floating point number.

HUGE MAXFLOAT

Description

Defines to (float)3.40282346638528860e+38

typedef __double_t double_t;

Description

Double 8 bytes

typedef __float_t float_t;

Description

Float 4 bytes

IMPORT_C double nanval(void);

Description

Not a number value.

Return value

IMPORT_C double atan(double);

Description

Parameters

Return value

See also:

• acos(double)
• acos(double)Calculate arccosine. Performs the trigonometric arc cosine operation on x and re...
• asin(double)
• asin(double)Calculate arcsine. Performs the trigonometric arc sine operation on x and return...
• atan2(double,double)
• atan2(double,double)Calculate arctangent, 2 parameters. Performs the trigonometric arctangent operat...
• cos(double)
• cos(double)Calculate cosine. Performs the trigonometric cosine operation on x returning a v...
• cosh(double)
• cosh(double)
• sin(double)
• sin(double)Calculate sine. Performs the trigonometric sine operation on x returning a value...
• sinh(double)
• sinh(double)
• tan(double)
• tan(double)Calculate tangent. Performs the trigonometric tangent operation on arg1.
• tanh(double)
• tanh(double)Calculate hyperbolic tangent.

IMPORT_C double atan2(double, double);

Description

Parameters

Return value

See also:

• acos(double)
• acos(double)Calculate arccosine. Performs the trigonometric arc cosine operation on x and re...
• asin(double)
• asin(double)Calculate arcsine. Performs the trigonometric arc sine operation on x and return...
• atan(double)
• atan(double)Calculate arctangent. Performs the trigonometric arctangent operation on x and r...
• cos(double)
• cos(double)Calculate cosine. Performs the trigonometric cosine operation on x returning a v...
• cosh(double)
• cosh(double)
• sin(double)
• sin(double)Calculate sine. Performs the trigonometric sine operation on x returning a value...
• sinh(double)
• sinh(double)
• tan(double)
• tan(double)Calculate tangent. Performs the trigonometric tangent operation on arg1.
• tanh(double)
• tanh(double)Calculate hyperbolic tangent.

IMPORT_C double cos(double);

Description

Parameters

Return value

See also:

• acos(double)
• acos(double)Calculate arccosine. Performs the trigonometric arc cosine operation on x and re...
• asin(double)
• asin(double)Calculate arcsine. Performs the trigonometric arc sine operation on x and return...
• atan(double)
• atan(double)Calculate arctangent. Performs the trigonometric arctangent operation on x and r...
• atan2(double,double)
• atan2(double,double)Calculate arctangent, 2 parameters. Performs the trigonometric arctangent operat...
• cosh(double)
• cosh(double)
• sin(double)
• sin(double)Calculate sine. Performs the trigonometric sine operation on x returning a value...
• sinh(double)
• sinh(double)
• tan(double)
• tan(double)Calculate tangent. Performs the trigonometric tangent operation on arg1.
• tanh(double)
• tanh(double)Calculate hyperbolic tangent.

IMPORT_C double cosh(double);

Description

Parameters

Return value

See also:

• acos(double)
• acos(double)Calculate arccosine. Performs the trigonometric arc cosine operation on x and re...
• asin(double)
• asin(double)Calculate arcsine. Performs the trigonometric arc sine operation on x and return...
• atan(double)
• atan(double)Calculate arctangent. Performs the trigonometric arctangent operation on x and r...
• atan2(double,double)
• atan2(double,double)Calculate arctangent, 2 parameters. Performs the trigonometric arctangent operat...
• cos(double)
• cos(double)Calculate cosine. Performs the trigonometric cosine operation on x returning a v...
• sin(double)
• sin(double)Calculate sine. Performs the trigonometric sine operation on x returning a value...
• sinh(double)
• sinh(double)
• tan(double)
• tan(double)Calculate tangent. Performs the trigonometric tangent operation on arg1.
• tanh(double)
• tanh(double)Calculate hyperbolic tangent.

IMPORT_C double exp(double);

Description

• Detailed description The exp and expf functions compute the base e exponential value of the given argument x .

The exp2 and exp2f functions compute the base 2 exponential of the given argument x .

The expm1 and expm1f functions compute the value exp(x)-1 accurately even for tiny argument x .

The log and logf functions compute the value of the natural logarithm of argument x .

The log10 and log10f functions compute the value of the logarithm of argument x to base 10.

The log1p and log1pf functions compute the value of log(1+x) accurately even for tiny argument x .

The pow and powf functions compute the value of x to the exponent y .

Here the long double version APIs are aliases to the double version APIs. All apis <function>l behaves similiar to that <function>.

• Examples

  #include <math.h>
  int main( void )
  {
     double x, y;
     x = 1.0;
     y = exp( x );
     printf( "exp( %f ) = %f
  ", x, y );
     y = expf( x );
     printf( "expf( %f ) = %f
  ",x, y );
     y = expl( x );
     printf( "expl( %f ) = %f
  ",x, y );
     x = 0.0;
     y = exp2( x );
     printf( "exp2( %f ) = %f
  ", x, y );
     y = exp2f( x );
     printf( "exp2f( %f ) = %f
  ",x, y );
     y = exp2l( x );
     printf( "exp2l( %f ) = %f
  ",x, y );
     x = 1.0 ;
     y = expm1( x );
     printf( "expm1( %f ) = %f
  ", x, y );
     y = expm1f( x );
     printf( "expm1f( %f ) = %f
  ",x, y );
     y = expm1l( x );
     printf( "expm1l( %f ) = %f
  ",x, y );
  }

  Output

  exp   ( 1.0 ) = 2.718282
  expf  ( 1.0 ) = 2.718282
  expl  ( 1.0 ) = 2.718282
  exp2  ( 0.0 ) = 1.000000
  exp2f ( 0.0 ) = 1.000000
  exp2l ( 0.0 ) = 1.000000
  expm1 ( 1.0 ) = 1.718281        
  expm1f( 1.0 ) = 1.718281
  expm1l( 1.0 ) = 1.718281

Notes:

The functions exp(x)-1 and log(1+x) are called expm1 and logp1 in BASIC on the Hewlett-Packard HP -71B and APPLE Macintosh, EXP1 and LN1 in Pascal, exp1 and log1 in C on APPLE Macintoshes, where they have been provided to make sure financial calculations of ((1+x)**n-1)/x, namely expm1(n*log1p(x))/x, will be accurate when x is tiny. They also provide accurate inverse hyperbolic functions. The function pow (x, 0); returns x**0 = 1 for all x including x = 0, oo, and NaN . Previous implementations of pow may have defined x**0 to be undefined in some or all of these cases. Here are reasons for returning x**0 = 1 always: Any program that already tests whether x is zero (or infinite or NaN) before computing x**0 cannot care whether 0**0 = 1 or not. Any program that depends upon 0**0 to be invalid is dubious anyway since that expression's meaning and, if invalid, its consequences vary from one computer system to another. Some Algebra texts (e.g. Sigler's) define x**0 = 1 for all x, including x = 0. This is compatible with the convention that accepts a[0] as the value of polynomial

p(x) = a[0]*x**0 + a[1]*x**1 + a[2]*x**2 +...+ a[n]*x**n

at x = 0 rather than reject a[0]*0**0 as invalid. Analysts will accept 0**0 = 1 despite that x**y can approach anything or nothing as x and y approach 0 independently. The reason for setting 0**0 = 1 anyway is this:

If x(z) and y(z) are

 any
functions analytic (expandable
in power series) in z around z = 0, and if there
x(0) = y(0) = 0, then x(z)**y(z) -> 1 as z -> 0.

If 0**0 = 1, then oo**0 = 1/0**0 = 1 too; and then NaN**0 = 1 too because x**0 = 1 for all finite and infinite x, i.e., independently of x.

Parameters

Return value

IMPORT_C double frexp(double, int *);

Description

• Detailed description The frexp , frexpf, and frexpl functions break a floating-point number into a normalized fraction and an integral power of 2. They store the integer in the int object pointed to by eptr . As there is no long double is not supported by Symbian, frexpl (is, aliased, to, the); frexp

• Examples

  void main( void )
  {
     double x1 = 4.0 , y;
     int res;
     y = frexp( x1, &res; );
     printf( "frexp(%f , &res;):: Int Part: %d and Fractional Part: %f 
  ", x1, res, y );
     y = frexpf( x1, &res; );
     printf( "frexpf(%f , &res;):: Int Part: %d and Fractional Part: %f 
  ", x1, res, y );
     y = frexpl( x1, &res; );
     printf( "frexpl(%f , &res;):: Int Part: %d and Fractional Part: %f 
  ", x1, res, y );
  }

  Output

  frexp ( 4.0 , &res; ) :: Int Part: 3 and Fractional Part: 0.5
  frexpf( 4.0,  &res; ) :: Int Part: 3 and Fractional Part: 0.5
  frexpl( 4.0,  &res; ) :: Int Part: 3 and Fractional Part: 0.5

Parameters

Return value

IMPORT_C double log(double);

Description

Parameters

Return value

IMPORT_C double log10(double);

Description

Parameters

Return value

IMPORT_C double pow(double, double);

Description

Parameters

Return value

IMPORT_C double sqrt(double);

Description

Parameters

Return value

IMPORT_C double fabs(double);

Description

The fabs , fabsf and fabsl functions compute the absolute value of a floating-point number x .

Examples

#include  <stdio.h>
#include  <math.h>
int main( void )
{
   double dx = -3.141593, dy;
   dy = fabs( dx );
   printf( "fabs( %f ) = %f
", dx, dy );
   dy = fabsf( dx );
   printf( "fabsf( %f ) = %f
", dx, dy );
   dy = fabsl( dx );
   printf( "fabsl( %f ) = %f
", dx, dy );
}

Output

fabs( -3.141593  ) = 3.141593
fabsf( -3.141593 ) = 3.141593
fabsl( -3.141593 ) = 3.141593

Parameters

Return value

See also:

• abs(int)
• abs(int)Return absolute value of integer parameter.
• ceil(double)
• ceil(double)Round up a value. Returns the smallest integer that is greater or equal to x
• floor(double)
• floor(double)Round down value. Returns the largest integer that is less than or equal to x
• rint(double)
• rint(double)Round to integral value in floating-point format

IMPORT_C double fmod(double, double);

Description

The fmod, fmodf, and fmodl functions compute the floating-point remainder of x / y . fmodl is an alias to the function fmod.

Examples

#include <math.h>
int main()
{
   double x1 = 6.5, x2 = 2.25, y;
   y = fmod( x1, x2 );
   printf( "fmod(%f , %f) = %f
", x1, x2, y );
   y = fmodf( x1, x2 );
   printf( "fmodf(%f , %f) = %f
", x1, x2, y );
   y = fmodl( x1, x2 );
   printf( "fmodl(%f , %f) = %f
", x1, x2, y );
}

Output

fmod ( 6.4, 2 ) = 2.0
fmodf( 6.4, 2 ) = 2.0
fmodl( 6.4, 2 ) = 2.0

Parameters

Return value

IMPORT_C double asinh(double);

Description

Parameters

Return value

See also:

• atanh(double)
• atanh(double)
• exp(double)
• exp(double)Calculate exponential. Returns the exponential value of parameter arg1.

IMPORT_C double atanh(double);

Description

Parameters

Return value

See also:

• asinh(double)
• asinh(double)
• exp(double)
• exp(double)Calculate exponential. Returns the exponential value of parameter arg1.

IMPORT_C double erf(double);

Description

Parameters

Return value

IMPORT_C double erfc(double);

Description

Parameters

Return value

IMPORT_C double exp2(double);

Description

Parameters

Return value

IMPORT_C double expm1(double);

Description

The expm1 and expm1f functions compute the value exp(x)-1 accurately even for tiny argument x .

Parameters

Return value

IMPORT_C double fma(double, double, double);

Description

• Examples

  #include <math.h>
  int main()
  {
     double x1 = 1, x2 = 2, x3 =3, y;
     y = fma( x1, x2, x3 );
     printf( "fma(%f , %f , %f) = %f
  ", x1, x2, x3, y );
     y = fmaf( x1, x2, x3 );
     printf( "fmaf(%f , %f , %f) = %f
  ", x1, x2, x3, y );
     y = fmal( x1, x2, x3 );
     printf( "fmal(%f , %f , %f) = %f
  ", x1, x2, x3, y );
  }

  Output

  fma ( 1, 2, 3 ) = 5
  fmaf( 1, 2, 3 ) = 5
  fmal( 1, 2, 3 ) = 5

  Implementation notes In general, these routines will behave as one would expect if x * y + z were computed with unbounded precision and range, then rounded to the precision of the return type. However, on some platforms,

Parameters

Return value

IMPORT_C double hypot(double, double);

Description

Examples

void main( void )
{
   double x1 = 3.0 , x2 = 4.0, y;
   y = hypot( x1, x2 );
   printf( "atan2(%f , %f) = %f
", x1, x2, y );
   y = hypotf( x1, x2 );
   printf( "atan2f(%f , %f) = %f
", x1, x2, y );
   y = hypotl( x1, x2 );
   printf( "hypotl(%f , %f) = %f
", x1, x2, y );
}

Output

hypot ( 3.0, 4.0  ) = 5.000000
hypotf( 3.0, 4.0 )  = 5.000000
hypotl( 3.0, 4.0 )  = 5.000000

Notes:

As might be expected, hypot (v, NaN); and hypot (NaN, v); are NaN for all finite v. But programmers might be surprised at first to discover that hypot (±oo, NaN); = +oo. This is intentional; it happens because hypot (oo, v); = +oo for all v, finite or infinite. Hence hypot (oo, v); is independent of v. Unlike the reserved operand fault on a VAX, the IEEE NaN is designed to disappear when it turns out to be irrelevant, as it does in hypot (oo, NaN); hypot.

hypot (oo, v); = hypot (v, oo); = +oo for all v, including NaN.

Parameters

Return value

See also:

• sqrt(double)
• sqrt(double)Calculate square root. Returns the square root of parameter arg1.

IMPORT_C int ilogb(double);

Description

Examples

#include <math.h>
int main( )
{
   double e = 1024;
   /*iLogb(), ilogbf() and ilogbl() */
   y = ilogb( e );
   printf( "ilogb( %f) = %f
", e, y );
   y = ilogbf( e );
   printf( "ilogbf( %f) = %f
", e, y );
   y = ilogbl( e );
   printf( "ilogbl( %f) = %f

", e, y );
}

Output

ilogb (1024) = 10.000000
ilogbf(1024) = 10.000000
ilogbl(1024) = 10.000000

Parameters

Return value

See also:

• frexp(double,int *)
• frexp(double,int *)Get mantissa and exponent of floating-point value. Calculates mantissa (a floati...
• scalbn(double,int)
• scalbn(double,int)Scales x by n, returning x times 2 to the power n. The result is computed by man...

IMPORT_C double lgamma(double);

Description

Parameters

Return value

IMPORT_C long long llround(double);

Description

The lround function returns the integer nearest to its argument x , rounding away from zero in halfway cases. If the rounded result is too large to be represented as a long value, the return value is undefined. When the rounded result is representable as a long , the expression lround (x); is equivalent to round (x);( long) (although the former may be more efficient).

The llround , llroundf , llroundl , lroundf and lroundl functions differ from lround only in their input and output types.

Examples

#include <math.h>
int main( void )
{
   double x1 = 1.5;
   long long y;
   int res ;
   y = llround( x1 );
   printf( "llround(%f) = %d
", x1, y );
   y = llroundf( x1 );
   printf( "llroundf(%f) = %d
", x1, y );
   y = llroundl( x1 );
   printf( "llroundl(%f) = %d

", x1, y );
   res = lround( x1 );
   printf( "lround(%f) = %d
", x1, res );
   res = lroundf( x1 );
   printf( "lroundf(%f) = %d
", x1, res );
   res = lroundl( x1 );
   printf( "lroundl(%f) = %d
", x1, res );
}

Output

llround ( 1.5 ) = 2.000000
llroundf( 1.5 ) = 2.000000
llroundl( 1.5 ) = 2.000000
lround ( 1.5 ) = 2.000000
lroundf( 1.5 ) = 2.000000
lroundl( 1.5 ) = 2.000000

Parameters

Return value

See also:

• lrint(double)
• lrint(double)
• rint(double)
• rint(double)Round to integral value in floating-point format

IMPORT_C double log1p(double);

Description

Parameters

Return value

IMPORT_C long lrint(double);

Description

Parameters

Return value

See also:

• lround(double)
• lround(double)
• rint(double)
• rint(double)Round to integral value in floating-point format

IMPORT_C long lround(double);

Description

Parameters

Return value

See also:

• lrint(double)
• lrint(double)
• rint(double)
• rint(double)Round to integral value in floating-point format

IMPORT_C double remainder(double, double);

Description

Parameters

Return value

See also:

• fmod(double,double)
• fmod(double,double)Return remainder of floating point division. Performs division arg1/arg2 and ret...

IMPORT_C double remquo(double, double, int *);

Description

Parameters

Return value

See also:

• fmod(double,double)
• fmod(double,double)Return remainder of floating point division. Performs division arg1/arg2 and ret...

IMPORT_C double rint(double);

Description

Parameters

Return value

See also:

• abs(int)
• abs(int)Return absolute value of integer parameter.
• ceil(double)
• ceil(double)Round up a value. Returns the smallest integer that is greater or equal to x
• fabs(double)
• fabs(double)Return absolute value of floating-point. Returns the absoulte value of parameter...
• floor(double)
• floor(double)Round down value. Returns the largest integer that is less than or equal to x
• lrint(double)
• lrint(double)
• lround(double)
• lround(double)

IMPORT_C double j1(double);

Description

Parameters

Return value

IMPORT_C double jn(int, double);

Description

Parameters

Return value

IMPORT_C double scalb(double, double);

Description

Parameters

Return value

IMPORT_C double y0(double);

Description

Parameters

Return value

IMPORT_C double y1(double);

Description

Parameters

Return value

IMPORT_C double yn(int, double);

Description

Parameters

Return value

IMPORT_C double gamma(double);

Description

Parameters

Return value

IMPORT_C double fmin(double, double);

Description

Parameters

Return value

See also:

• fabs(double)
• fabs(double)Return absolute value of floating-point. Returns the absoulte value of parameter...

IMPORT_C double scalbn(double, int);

Description

Parameters

Return value

IMPORT_C double drem(double, double);

Description

• Detailed description The drem dremf and the dreml functions compute the remainder of dividing x by y. The return value is x - n * y, where n is the quotient of x / y, rounded to the nearest integer. If the quotient is 1/2, it is rounded to the even number. The function dreml an alias to the function drem.

• Examples

  #include <math.h>
  void main()
  {
     double x1 = 6.4, x2 = 2, y;
     y = drem( x1, x2 );
     printf( "drem(%f , %f) = %f
  ", x1, x2, y );
     y = dremf( x1, x2 );
     printf( "dremf(%f , %f) = %f
  ", x1, x2, y );
     y = dreml( x1, x2 );
     printf( "dreml(%f , %f) = %f
  ", x1, x2, y );
  }

  Output

  drem ( 6.4, 2 ) = 0.4
  dremf( 6.4, 2 ) = 0.4
  dreml( 6.4, 2 ) = 0.4

Parameters

Return value

IMPORT_C int finite(double);

Description

• Examples

  #include <math.h>
  int main( void )
  {
     double x;
     int y; 
     x = 1.34565;
     y = finite( x );
     printf( "finite( %f ) =  %d
  ", x, y );
     y = finitef( x );
     printf( "finitef( %f ) = %d
  ",x, y );
     y = finitel( x );
     printf( "finitel( %f ) = %d
  ",x, y );
  }

  Output

  finite ( 1.34565 ) = 1
  finitef( 1.34565 ) = 1
  finitel( 1.34565 ) =

Parameters

Return value

IMPORT_C int isnanf(float);

Description

test for infinity or not-a-number

Parameters

Return value

IMPORT_C double lgamma_r(double, int *);

Description

Parameters

Return value

IMPORT_C double significand(double);

Description

Parameters

Return value

IMPORT_C float acosf(float);

Description

Parameters

Return value

See also:

• asin(double)
• asin(double)Calculate arcsine. Performs the trigonometric arc sine operation on x and return...
• atan(double)
• atan(double)Calculate arctangent. Performs the trigonometric arctangent operation on x and r...
• atan2(double,double)
• atan2(double,double)Calculate arctangent, 2 parameters. Performs the trigonometric arctangent operat...
• cos(double)
• cos(double)Calculate cosine. Performs the trigonometric cosine operation on x returning a v...
• cosh(double)
• cosh(double)
• sin(double)
• sin(double)Calculate sine. Performs the trigonometric sine operation on x returning a value...
• sinh(double)
• sinh(double)
• tan(double)
• tan(double)Calculate tangent. Performs the trigonometric tangent operation on arg1.
• tanh(double)
• tanh(double)Calculate hyperbolic tangent.

IMPORT_C float asinf(float);

Description

Parameters

Return value

See also:

• acos(double)
• acos(double)Calculate arccosine. Performs the trigonometric arc cosine operation on x and re...
• atan(double)
• atan(double)Calculate arctangent. Performs the trigonometric arctangent operation on x and r...
• atan2(double,double)
• atan2(double,double)Calculate arctangent, 2 parameters. Performs the trigonometric arctangent operat...
• cos(double)
• cos(double)Calculate cosine. Performs the trigonometric cosine operation on x returning a v...
• cosh(double)
• cosh(double)
• sin(double)
• sin(double)Calculate sine. Performs the trigonometric sine operation on x returning a value...
• sinh(double)
• sinh(double)
• tan(double)
• tan(double)Calculate tangent. Performs the trigonometric tangent operation on arg1.
• tanh(double)
• tanh(double)Calculate hyperbolic tangent.

IMPORT_C float atanf(float);

Description

Parameters

Return value

See also:

• acos(double)
• acos(double)Calculate arccosine. Performs the trigonometric arc cosine operation on x and re...
• asin(double)
• asin(double)Calculate arcsine. Performs the trigonometric arc sine operation on x and return...
• atan2(double,double)
• atan2(double,double)Calculate arctangent, 2 parameters. Performs the trigonometric arctangent operat...
• cos(double)
• cos(double)Calculate cosine. Performs the trigonometric cosine operation on x returning a v...
• cosh(double)
• cosh(double)
• sin(double)
• sin(double)Calculate sine. Performs the trigonometric sine operation on x returning a value...
• sinh(double)
• sinh(double)
• tan(double)
• tan(double)Calculate tangent. Performs the trigonometric tangent operation on arg1.
• tanh(double)
• tanh(double)Calculate hyperbolic tangent.

IMPORT_C float atan2f(float, float);

Description

Parameters

Return value

See also:

• acos(double)
• acos(double)Calculate arccosine. Performs the trigonometric arc cosine operation on x and re...
• asin(double)
• asin(double)Calculate arcsine. Performs the trigonometric arc sine operation on x and return...
• atan(double)
• atan(double)Calculate arctangent. Performs the trigonometric arctangent operation on x and r...
• cos(double)
• cos(double)Calculate cosine. Performs the trigonometric cosine operation on x returning a v...
• cosh(double)
• cosh(double)
• sin(double)
• sin(double)Calculate sine. Performs the trigonometric sine operation on x returning a value...
• sinh(double)
• sinh(double)
• tan(double)
• tan(double)Calculate tangent. Performs the trigonometric tangent operation on arg1.
• tanh(double)
• tanh(double)Calculate hyperbolic tangent.

IMPORT_C float cosf(float);

Description

Parameters

Return value

See also:

• acos(double)
• acos(double)Calculate arccosine. Performs the trigonometric arc cosine operation on x and re...
• asin(double)
• asin(double)Calculate arcsine. Performs the trigonometric arc sine operation on x and return...
• atan(double)
• atan(double)Calculate arctangent. Performs the trigonometric arctangent operation on x and r...
• atan2(double,double)
• atan2(double,double)Calculate arctangent, 2 parameters. Performs the trigonometric arctangent operat...
• cosh(double)
• cosh(double)
• sin(double)
• sin(double)Calculate sine. Performs the trigonometric sine operation on x returning a value...
• sinh(double)
• sinh(double)
• tan(double)
• tan(double)Calculate tangent. Performs the trigonometric tangent operation on arg1.
• tanh(double)
• tanh(double)Calculate hyperbolic tangent.

IMPORT_C float sinf(float);

Description

Parameters

Return value

See also:

• acos(double)
• acos(double)Calculate arccosine. Performs the trigonometric arc cosine operation on x and re...
• asin(double)
• asin(double)Calculate arcsine. Performs the trigonometric arc sine operation on x and return...
• atan(double)
• atan(double)Calculate arctangent. Performs the trigonometric arctangent operation on x and r...
• atan2(double,double)
• atan2(double,double)Calculate arctangent, 2 parameters. Performs the trigonometric arctangent operat...
• cos(double)
• cos(double)Calculate cosine. Performs the trigonometric cosine operation on x returning a v...
• cosh(double)
• cosh(double)
• sinh(double)
• sinh(double)
• tan(double)
• tan(double)Calculate tangent. Performs the trigonometric tangent operation on arg1.
• tanh(double)
• tanh(double)Calculate hyperbolic tangent.

IMPORT_C float tanf(float);

Description

Parameters

Return value

See also:

• acos(double)
• acos(double)Calculate arccosine. Performs the trigonometric arc cosine operation on x and re...
• asin(double)
• asin(double)Calculate arcsine. Performs the trigonometric arc sine operation on x and return...
• atan(double)
• atan(double)Calculate arctangent. Performs the trigonometric arctangent operation on x and r...
• atan2(double,double)
• atan2(double,double)Calculate arctangent, 2 parameters. Performs the trigonometric arctangent operat...
• cos(double)
• cos(double)Calculate cosine. Performs the trigonometric cosine operation on x returning a v...
• cosh(double)
• cosh(double)
• sin(double)
• sin(double)Calculate sine. Performs the trigonometric sine operation on x returning a value...
• sinh(double)
• sinh(double)
• tanh(double)
• tanh(double)Calculate hyperbolic tangent.

IMPORT_C float coshf(float);

Description

Parameters

Return value

See also:

• acos(double)
• acos(double)Calculate arccosine. Performs the trigonometric arc cosine operation on x and re...
• asin(double)
• asin(double)Calculate arcsine. Performs the trigonometric arc sine operation on x and return...
• atan(double)
• atan(double)Calculate arctangent. Performs the trigonometric arctangent operation on x and r...
• atan2(double,double)
• atan2(double,double)Calculate arctangent, 2 parameters. Performs the trigonometric arctangent operat...
• cos(double)
• cos(double)Calculate cosine. Performs the trigonometric cosine operation on x returning a v...
• sin(double)
• sin(double)Calculate sine. Performs the trigonometric sine operation on x returning a value...
• sinh(double)
• sinh(double)
• tan(double)
• tan(double)Calculate tangent. Performs the trigonometric tangent operation on arg1.
• tanh(double)
• tanh(double)Calculate hyperbolic tangent.

IMPORT_C float sinhf(float);

Description

Parameters

Return value

See also:

• acos(double)
• acos(double)Calculate arccosine. Performs the trigonometric arc cosine operation on x and re...
• asin(double)
• asin(double)Calculate arcsine. Performs the trigonometric arc sine operation on x and return...
• atan(double)
• atan(double)Calculate arctangent. Performs the trigonometric arctangent operation on x and r...
• atan2(double,double)
• atan2(double,double)Calculate arctangent, 2 parameters. Performs the trigonometric arctangent operat...
• cos(double)
• cos(double)Calculate cosine. Performs the trigonometric cosine operation on x returning a v...
• cosh(double)
• cosh(double)
• sin(double)
• sin(double)Calculate sine. Performs the trigonometric sine operation on x returning a value...
• tan(double)
• tan(double)Calculate tangent. Performs the trigonometric tangent operation on arg1.
• tanh(double)
• tanh(double)Calculate hyperbolic tangent.

IMPORT_C float tanhf(float);

Description

Parameters

Return value

See also:

• acos(double)
• acos(double)Calculate arccosine. Performs the trigonometric arc cosine operation on x and re...
• asin(double)
• asin(double)Calculate arcsine. Performs the trigonometric arc sine operation on x and return...
• atan(double)
• atan(double)Calculate arctangent. Performs the trigonometric arctangent operation on x and r...
• atan2(double,double)
• atan2(double,double)Calculate arctangent, 2 parameters. Performs the trigonometric arctangent operat...
• cos(double)
• cos(double)Calculate cosine. Performs the trigonometric cosine operation on x returning a v...
• cosh(double)
• cosh(double)
• sin(double)
• sin(double)Calculate sine. Performs the trigonometric sine operation on x returning a value...
• sinh(double)
• sinh(double)
• tan(double)
• tan(double)Calculate tangent. Performs the trigonometric tangent operation on arg1.

IMPORT_C float exp2f(float);

Description

Parameters

Return value

IMPORT_C float expf(float);

Description

Parameters

Return value

IMPORT_C float expm1f(float);

Description

The expm1 and expm1f functions compute the value exp(x)-1 accurately even for tiny argument x .

Parameters

Return value

IMPORT_C float frexpf(float, int *);

Description

Parameters

Return value

IMPORT_C int ilogbf(float);

Description

Parameters

Return value

See also:

• frexp(double,int *)
• frexp(double,int *)Get mantissa and exponent of floating-point value. Calculates mantissa (a floati...
• scalbn(double,int)
• scalbn(double,int)Scales x by n, returning x times 2 to the power n. The result is computed by man...

IMPORT_C float log10f(float);

Description

Parameters

Return value

IMPORT_C float log1pf(float);

Description

Parameters

Return value

IMPORT_C float logf(float);

Description

Parameters

Return value

IMPORT_C float modff(float, float *);

Description

Parameters

Return value

See also:

• frexp(double,int *)
• frexp(double,int *)Get mantissa and exponent of floating-point value. Calculates mantissa (a floati...
• ldexp(double,int)
• ldexp(double,int)Get floating-point value from mantissa and exponent. Calculates the floating poi...

IMPORT_C float powf(float, float);

Description

Parameters

Return value

IMPORT_C float sqrtf(float);

Description

Parameters

Return value

IMPORT_C float ceilf(float);

Description

Parameters

Return value

See also:

• abs(int)
• abs(int)Return absolute value of integer parameter.
• fabs(double)
• fabs(double)Return absolute value of floating-point. Returns the absoulte value of parameter...
• floor(double)
• floor(double)Round down value. Returns the largest integer that is less than or equal to x
• rint(double)
• rint(double)Round to integral value in floating-point format

IMPORT_C float fabsf(float);

Description

Parameters

Return value

See also:

• abs(int)
• abs(int)Return absolute value of integer parameter.
• ceil(double)
• ceil(double)Round up a value. Returns the smallest integer that is greater or equal to x
• floor(double)
• floor(double)Round down value. Returns the largest integer that is less than or equal to x
• rint(double)
• rint(double)Round to integral value in floating-point format

IMPORT_C float floorf(float);

Description

Parameters

Return value

See also:

• abs(int)
• abs(int)Return absolute value of integer parameter.
• ceil(double)
• ceil(double)Round up a value. Returns the smallest integer that is greater or equal to x
• fabs(double)
• fabs(double)Return absolute value of floating-point. Returns the absoulte value of parameter...
• rint(double)
• rint(double)Round to integral value in floating-point format

IMPORT_C float fmodf(float, float);

Description

Parameters

Return value

IMPORT_C float roundf(float);

Description

Parameters

Return value

See also:

• ceil(double)
• ceil(double)Round up a value. Returns the smallest integer that is greater or equal to x
• floor(double)
• floor(double)Round down value. Returns the largest integer that is less than or equal to x
• lrint(double)
• lrint(double)
• lround(double)
• lround(double)
• rint(double)
• rint(double)Round to integral value in floating-point format

IMPORT_C float erff(float);

Description

Parameters

Return value

IMPORT_C float erfcf(float);

Description

Parameters

Return value

IMPORT_C float hypotf(float, float);

Description

Parameters

Return value

See also:

• sqrt(double)
• sqrt(double)Calculate square root. Returns the square root of parameter arg1.

IMPORT_C float lgammaf(float);

Description

Parameters

Return value

IMPORT_C float acoshf(float);

Description

Parameters

Return value

See also:

• asinh(double)
• asinh(double)
• atanh(double)
• atanh(double)
• exp(double)
• exp(double)Calculate exponential. Returns the exponential value of parameter arg1.

IMPORT_C float asinhf(float);

Description

Parameters

Return value

See also:

• atanh(double)
• atanh(double)
• exp(double)
• exp(double)Calculate exponential. Returns the exponential value of parameter arg1.

IMPORT_C float atanhf(float);

Description

Parameters

Return value

See also:

• asinh(double)
• asinh(double)
• exp(double)
• exp(double)Calculate exponential. Returns the exponential value of parameter arg1.

IMPORT_C float cbrtf(float);

Description

Parameters

Return value

IMPORT_C float logbf(float);

Description

Parameters

Return value

IMPORT_C float copysignf(float, float);

Description

Parameters

Return value

See also:

• fabs(double)
• fabs(double)Return absolute value of floating-point. Returns the absoulte value of parameter...

IMPORT_C long long llrintf(float);

Description

Parameters

Return value

See also:

• lround(double)
• lround(double)
• rint(double)
• rint(double)Round to integral value in floating-point format

IMPORT_C long long llroundf(float);

Description

Parameters

Return value

See also:

• lrint(double)
• lrint(double)
• rint(double)
• rint(double)Round to integral value in floating-point format

IMPORT_C long lrintf(float);

Description

Parameters

Return value

See also:

• lround(double)
• lround(double)
• rint(double)
• rint(double)Round to integral value in floating-point format

IMPORT_C long lroundf(float);

Description

Parameters

Return value

See also:

• lrint(double)
• lrint(double)
• rint(double)
• rint(double)Round to integral value in floating-point format

IMPORT_C float nearbyintf(float);

Description

Parameters

Return value

See also:

• abs(int)
• abs(int)Return absolute value of integer parameter.
• ceil(double)
• ceil(double)Round up a value. Returns the smallest integer that is greater or equal to x
• fabs(double)
• fabs(double)Return absolute value of floating-point. Returns the absoulte value of parameter...
• floor(double)
• floor(double)Round down value. Returns the largest integer that is less than or equal to x
• lrint(double)
• lrint(double)
• lround(double)
• lround(double)

IMPORT_C float nextafterf(float, float);

Description

Parameters

Return value

IMPORT_C float remainderf(float, float);

Description

Parameters

Return value

See also:

• fmod(double,double)
• fmod(double,double)Return remainder of floating point division. Performs division arg1/arg2 and ret...

IMPORT_C float remquof(float, float, int *);

Description

Parameters

Return value

See also:

• fmod(double,double)
• fmod(double,double)Return remainder of floating point division. Performs division arg1/arg2 and ret...

IMPORT_C float rintf(float);

Description

Parameters

Return value

See also:

• abs(int)
• abs(int)Return absolute value of integer parameter.
• ceil(double)
• ceil(double)Round up a value. Returns the smallest integer that is greater or equal to x
• fabs(double)
• fabs(double)Return absolute value of floating-point. Returns the absoulte value of parameter...
• floor(double)
• floor(double)Round down value. Returns the largest integer that is less than or equal to x
• lrint(double)
• lrint(double)
• lround(double)
• lround(double)

IMPORT_C float scalblnf(float, long);

Description

Parameters

Return value

IMPORT_C float scalbnf(float, int);

Description

Parameters

Return value

IMPORT_C float truncf(float);

Description

Parameters

Return value

See also:

• ceil(double)
• ceil(double)Round up a value. Returns the smallest integer that is greater or equal to x
• fegetround(void)
• fegetround(void)get current rounding direction
• floor(double)
• floor(double)Round down value. Returns the largest integer that is less than or equal to x
• rint(double)
• rint(double)Round to integral value in floating-point format

IMPORT_C float fdimf(float, float);

Description

Parameters

Return value

See also:

• fabs(double)
• fabs(double)Return absolute value of floating-point. Returns the absoulte value of parameter...

IMPORT_C float fmaf(float, float, float);

Description

Parameters

Return value

IMPORT_C float fmaxf(float, float);

Description

Parameters

Return value

See also:

• fabs(double)
• fabs(double)Return absolute value of floating-point. Returns the absoulte value of parameter...

IMPORT_C float fminf(float, float);

Description

Parameters

Return value

See also:

• fabs(double)
• fabs(double)Return absolute value of floating-point. Returns the absoulte value of parameter...

IMPORT_C int finitef(float);

Description

Parameters

Return value

IMPORT_C float gammaf(float);

Description

Parameters

Return value

IMPORT_C float j0f(float);

Description