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00001 #ifndef PGTYPES_NUMERIC 00002 #define PGTYPES_NUMERIC 00003 00004 #define NUMERIC_POS 0x0000 00005 #define NUMERIC_NEG 0x4000 00006 #define NUMERIC_NAN 0xC000 00007 #define NUMERIC_NULL 0xF000 00008 #define NUMERIC_MAX_PRECISION 1000 00009 #define NUMERIC_MAX_DISPLAY_SCALE NUMERIC_MAX_PRECISION 00010 #define NUMERIC_MIN_DISPLAY_SCALE 0 00011 #define NUMERIC_MIN_SIG_DIGITS 16 00012 00013 #define DECSIZE 30 00014 00015 typedef unsigned char NumericDigit; 00016 typedef struct 00017 { 00018 int ndigits; /* number of digits in digits[] - can be 0! */ 00019 int weight; /* weight of first digit */ 00020 int rscale; /* result scale */ 00021 int dscale; /* display scale */ 00022 int sign; /* NUMERIC_POS, NUMERIC_NEG, or NUMERIC_NAN */ 00023 NumericDigit *buf; /* start of alloc'd space for digits[] */ 00024 NumericDigit *digits; /* decimal digits */ 00025 } numeric; 00026 00027 typedef struct 00028 { 00029 int ndigits; /* number of digits in digits[] - can be 0! */ 00030 int weight; /* weight of first digit */ 00031 int rscale; /* result scale */ 00032 int dscale; /* display scale */ 00033 int sign; /* NUMERIC_POS, NUMERIC_NEG, or NUMERIC_NAN */ 00034 NumericDigit digits[DECSIZE]; /* decimal digits */ 00035 } decimal; 00036 00037 #ifdef __cplusplus 00038 extern "C" 00039 { 00040 #endif 00041 00042 numeric *PGTYPESnumeric_new(void); 00043 decimal *PGTYPESdecimal_new(void); 00044 void PGTYPESnumeric_free(numeric *); 00045 void PGTYPESdecimal_free(decimal *); 00046 numeric *PGTYPESnumeric_from_asc(char *, char **); 00047 char *PGTYPESnumeric_to_asc(numeric *, int); 00048 int PGTYPESnumeric_add(numeric *, numeric *, numeric *); 00049 int PGTYPESnumeric_sub(numeric *, numeric *, numeric *); 00050 int PGTYPESnumeric_mul(numeric *, numeric *, numeric *); 00051 int PGTYPESnumeric_div(numeric *, numeric *, numeric *); 00052 int PGTYPESnumeric_cmp(numeric *, numeric *); 00053 int PGTYPESnumeric_from_int(signed int, numeric *); 00054 int PGTYPESnumeric_from_long(signed long int, numeric *); 00055 int PGTYPESnumeric_copy(numeric *, numeric *); 00056 int PGTYPESnumeric_from_double(double, numeric *); 00057 int PGTYPESnumeric_to_double(numeric *, double *); 00058 int PGTYPESnumeric_to_int(numeric *, int *); 00059 int PGTYPESnumeric_to_long(numeric *, long *); 00060 int PGTYPESnumeric_to_decimal(numeric *, decimal *); 00061 int PGTYPESnumeric_from_decimal(decimal *, numeric *); 00062 00063 #ifdef __cplusplus 00064 } 00065 #endif 00066 00067 #endif /* PGTYPES_NUMERIC */
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