netbsd man page for strpct

STRPCT(3)						   BSD Library Functions Manual 						 STRPCT(3)

NAME
     strpct, strspct -- decimal percent formatters

LIBRARY
     System Utilities Library (libutil, -lutil)

SYNOPSIS
     #include <util.h>

     char *
     strpct(char *buf, size_t bufsiz, uintmax_t numerator, uintmax_t denominator, size_t precision);

     char *
     strspct(char *buf, size_t bufsiz, intmax_t numerator, intmax_t denominator, size_t precision);

DESCRIPTION
     The strpct() function formats the fraction represented by numerator and denominator into a percentage representation with given number of
     digits of precision without using floating point arithmetic.

RETURN VALUES
     strpct() and strspct() always return a pointer to a NUL-terminated (unless buflen is 0) formatted string which is placed in buf and is up to
     buflen characters.  If there was an overflow, the formatted string will reflect that precision loss.

EXAMPLES
	   strpct(buf, buflen, 1, 16, 3);
	   => "6.250"
	   strpct(buf, buflen, 1, 2, 0);
	   => "50"

HISTORY
     strpct() was originally implemented in csh(1) for NetBSD 1.3.  It printed into a static buffer, was not locale aware, handled unsigned long
     numbers, and printed a ``%'' at the end of the number.  Other programs such as df(1) and time(1) started using it.  strpct() and strspct()
     appeared separately in libutil for NetBSD 6.0.

AUTHORS
     Erik E. Fair <fair@netbsd.org>

BSD
								  January 7, 2012							       BSD