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.TH INTSTRLEN 3 2018-11-05 libsimple
.SH NAME
INTSTRLEN \- get the maximum length of an integer string
.SH SYNOPSIS
.nf
#include <libsimple.h>
#ifndef INTSTRLEN
# define INTSTRLEN(type) /* implementation omitted */
#endif
.fi
.SH DESCRIPTION
The
.BR INTSTRLEN ()
macro assumes
.I type
is an integer type, and expends to a value representing
a number of bytes sufficiently large to store any value
of the specified integer type as a string without leading
zeroes or plus sign, and
.IR "without a terminating NUL byte" ,
as a constant expression in the type
.BR size_t ;
however it is not suitable for
.BR #if .
.PP
The resulting value can depend in either the type is
signed or unsigned, and can be slightly larger than
necessary, it can however not be smaller. (For integers
up to 64 bits, the result is only off by one for signed
64-bit integer types.)
.SH EXAMPLES
None.
.SH APPLICATION USAGE
None.
.SH RATIONALE
None.
.SH FUTURE DIRECTIONS
None.
.SH NOTES
None.
.SH BUGS
None.
.SH SEE ALSO
.BR TYPE_MIN (3libsimple)
.BR TYPE_MAX (3libsimple)
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