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#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 equivalent to the strtol(), strtoll(), strtoul(), and strtoull() functions, except that the initial portion of the string is converted to intmax_t and uintmax_t representation, respectively.
These functions return the converted value, if any.
If no conversion could be performed, 0 is returned.
If the correct value is outside the range of representable values, {INTMAX_MAX}, {INTMAX_MIN}, or {UINTMAX_MAX} is returned (according to the return type and sign of the value, if any), and errno is set to ERANGE.
These functions will fail if: ERANGE
The value to be returned is not representable.
These functions may fail if: EINVAL
The value of base is not supported.
See attributes(5) for descriptions of the following attributes:
| ATTRIBUTE TYPE ATTRIBUTE VALUE |
| Interface Stability Standard |
| MT-Level MT-Safe |
strtol(3C), strtoul(3C), attributes(5), standards(5)