man3/fmin.3

   1 .\" Copyright 2002 Walter Harms (walter.harms@informatik.uni-oldenburg.de)
   2 .\" and Copyright 2008, Linux Foundation, written by Michael Kerrisk
   3 .\"     <mtk.manpages@gmail.com>
   4 .\" Distributed under GPL
   5 .\"
   6 .TH FMIN 3 2010-09-20 "" "Linux Programmer's Manual"
   7 .SH NAME
   8 fmin, fminf, fminl \- determine minimum of two floating-point numbers
   9 .SH SYNOPSIS
  10 .B #include <math.h>
  11 .sp
  12 .BI "double fmin(double " x ", double " y );
  13 .br
  14 .BI "float fminf(float " x ", float " y );
  15 .br
  16 .BI "long double fminl(long double " x ", long double " y );
  17 .sp
  18 Link with \fI\-lm\fP.
  19 .sp
  20 .in -4n
  21 Feature Test Macro Requirements for glibc (see
  22 .BR feature_test_macros (7)):
  23 .in
  24 .sp
  25 .ad l
  26 .BR fmin (),
  27 .BR fminf (),
  28 .BR fminl ():
  29 .RS 4
  30 _XOPEN_SOURCE\ >=\ 600 || _ISOC99_SOURCE ||
  31 _POSIX_C_SOURCE\ >=\ 200112L;
  32 .br
  33 or
  34 .I cc\ -std=c99
  35 .RE
  36 .ad
  37 .SH DESCRIPTION
  38 These functions the lesser value of
  39 .I x
  40 and
  41 .IR y .
  42 .SH RETURN VALUE
  43 These functions return the minimum of
  44 .I x
  45 and
  46 .IR y .
  47
  48 If one argument is a NaN, the other argument is returned.
  49
  50 If both arguments are NaN, a NaN is returned.
  51 .SH ERRORS
  52 No errors occur.
  53 .SH VERSIONS
  54 These functions first appeared in glibc in version 2.1.
  55 .SH CONFORMING TO
  56 C99, POSIX.1-2001.
  57 .SH SEE ALSO
  58 .BR fmax (3)