humanize_number — format a
number into a human readable form and viceversa
*buf, size_t len,
const char *suffix,
function formats the signed 64 bit quantity given in
number into buffer. A space and
then suffix is appended to the end.
buffer must be at least len
If the formatted number (including suffix) would be too long to fit into buffer, then divide number by 1024 until it will. In this case, prefix suffix with the appropriate SI designator.
The prefixes are:
len must be at least 4 plus the length of suffix, in order to ensure a useful result is generated into buffer. To use a specific prefix, specify this as scale (Multiplier = 1024 ^ scale). This can not be combined with any of the scale flags below.
The following flags may be passed in scale:
The following flags may be passed in flags:
function parses the string representing an integral value given in
str and stores the numerical value in the integer
pointed to by result. The provided string may hold one
of the suffixes, which will be interpreted and used to scale up its
accompanying numerical value.
humanize_number() returns the number of
characters stored in buffer (excluding the terminating
NUL) upon success, or -1 upon failure. If
HN_GETSCALE is specified, the prefix index number
will be returned instead.
dehumanize_number() returns 0 if the
string was parsed correctly. A -1 is returned to indicate failure and an
error code is stored in errno.
dehumanize_number() will fail and no
number will be stored in result if:
humanize_number() first appeared in
dehumanize_number() first appeared in
|February 9, 2008||Debian|