expand_number.3bsd - Man Page

library “libbsd”

#include <libutil.h> (See libbsd(7) for include usage.)
int
expand_number(const char *buf, uint64_t *num);

The expand_number() function unformats the buf string and stores a unsigned 64-bit quantity at address pointed out by the num argument.

The expand_number() function follows the SI power of two convention.

The prefixes are:

Upon successful completion, the value 0 is returned; otherwise the value -1 is returned and the global variable errno is set to indicate the error.

The expand_number() function will fail if:

[EINVAL]

The given string contains no digits.

[EINVAL]

An unrecognized prefix was given.

[ERANGE]

Result doesn't fit into 64 bits.

humanize_number(3bsd)

The expand_number() function first appeared in FreeBSD 6.3.