| .\" Copyright 2002 Walter Harms (walter.harms@informatik.uni-oldenburg.de) |
| .\" and Copyright 2008, Linux Foundation, written by Michael Kerrisk |
| .\" <mtk.manpages@gmail.com> |
| .\" |
| .\" %%%LICENSE_START(GPL_NOVERSION_ONELINE) |
| .\" Distributed under GPL |
| .\" %%%LICENSE_END |
| .\" |
| .TH FMAX 3 2017-09-15 "" "Linux Programmer's Manual" |
| .SH NAME |
| fmax, fmaxf, fmaxl \- determine maximum of two floating-point numbers |
| .SH SYNOPSIS |
| .B #include <math.h> |
| .PP |
| .BI "double fmax(double " x ", double " y ); |
| .BI "float fmaxf(float " x ", float " y ); |
| .BI "long double fmaxl(long double " x ", long double " y ); |
| .PP |
| Link with \fI\-lm\fP. |
| .PP |
| .in -4n |
| Feature Test Macro Requirements for glibc (see |
| .BR feature_test_macros (7)): |
| .in |
| .PP |
| .ad l |
| .BR fmax (), |
| .BR fmaxf (), |
| .BR fmaxl (): |
| .RS 4 |
| _ISOC99_SOURCE || _POSIX_C_SOURCE\ >=\ 200112L |
| .RE |
| .ad |
| .SH DESCRIPTION |
| These functions return the larger value of |
| .I x |
| and |
| .IR y . |
| .SH RETURN VALUE |
| These functions return the maximum of |
| .I x |
| and |
| .IR y . |
| .PP |
| If one argument is a NaN, the other argument is returned. |
| .PP |
| If both arguments are NaN, a NaN is returned. |
| .SH ERRORS |
| No errors occur. |
| .SH VERSIONS |
| These functions first appeared in glibc in version 2.1. |
| .SH ATTRIBUTES |
| For an explanation of the terms used in this section, see |
| .BR attributes (7). |
| .TS |
| allbox; |
| lbw24 lb lb |
| l l l. |
| Interface Attribute Value |
| T{ |
| .BR fmax (), |
| .BR fmaxf (), |
| .BR fmaxl () |
| T} Thread safety MT-Safe |
| .TE |
| .SH CONFORMING TO |
| C99, POSIX.1-2001, POSIX.1-2008. |
| .SH SEE ALSO |
| .BR fdim (3), |
| .BR fmin (3) |
