strtoimax, strtoumax - convert string to integer

#include <inttypes.h>
intmax_t strtoimax(const char *restrict nptr, char **restrict endptr,
 int base);
uintmax_t strtoumax(const char *restrict nptr, char **restrict endptr,
 int base);

These functions are just like strtol(3) and strtoul(3), except that they return a value of type intmax_t and uintmax_t, respectively.

On success, the converted value is returned. If nothing was found to convert, zero is returned. On overflow or underflow INTMAX_MAX or INTMAX_MIN or UINTMAX_MAX is returned, and errno is set to ERANGE.

imaxabs(3), imaxdiv(3), strtol(3), strtoul(3), wcstoimax(3)