memparse — parse a string with mem suffixes into a number
unsigned long long memparse ( | char * | ptr, |
| char ** | retptr); |
Parses a string into a number. The number stored at ptr is
potentially suffixed with K (for kilobytes, or 1024 bytes),
M (for megabytes, or 1048576 bytes), or G (for gigabytes, or
1073741824). If the number is suffixed with K, M, or G, then
the return value is the number multiplied by one kilobyte, one
megabyte, or one gigabyte, respectively.