BSD strtoq(3) and strtouq(3) Functions
BSD is a little different in its large integer conversions. FreeBSD supports its strtoq(3) and strtouq(3) functional equivalents of the strtoll(3) and strtoull(3) functions. The 64-bit C data types that FreeBSD uses are
| Signed 64-bit | quad_t |
| Unsigned 64-bit | u_quad_t |
The function synopsis of the conversion routines for these data types is as follows:
#include <sys/types.h> #include <stdlib.h> #include <limits.h> quad_t strtoq(const char *nptr, char **endptr, int base); u_quad_t strtouq(const char *nptr, char **endptr, int base);
The C macros that you should use with strtoq(3) are QUAD_MAX and QUAD_MIN, when testing for overflow and underflow, respectively. For strtouq(3), you must use the C macro UQUAD_MAX instead. Neither of these appears in the man(1) pages for these routines, but they can be found in the include file <machine/limits.h>.
Note
It seems likely that FreeBSD will change its C data type long to be 64-bit in the future. This will result in the strtol(3) and strtoul(3) functions performing 64-bit conversion when that happens.