1FMAX(3P)                   POSIX Programmer's Manual                  FMAX(3P)
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PROLOG

6       This  manual  page is part of the POSIX Programmer's Manual.  The Linux
7       implementation of this interface may differ (consult the  corresponding
8       Linux  manual page for details of Linux behavior), or the interface may
9       not be implemented on Linux.
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NAME

13       fmax, fmaxf, fmaxl — determine maximum numeric value of  two  floating-
14       point numbers
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SYNOPSIS

17       #include <math.h>
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19       double fmax(double x, double y);
20       float fmaxf(float x, float y);
21       long double fmaxl(long double x, long double y);
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DESCRIPTION

24       The  functionality described on this reference page is aligned with the
25       ISO C standard. Any conflict between the  requirements  described  here
26       and  the  ISO C  standard is unintentional. This volume of POSIX.1‐2008
27       defers to the ISO C standard.
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29       These functions shall determine the  maximum  numeric  value  of  their
30       arguments.   NaN  arguments  shall  be  treated as missing data: if one
31       argument is a NaN and the other numeric,  then  these  functions  shall
32       choose the numeric value.
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RETURN VALUE

35       Upon  successful  completion,  these functions shall return the maximum
36       numeric value of their arguments.
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38       If just one argument is a NaN, the other argument shall be returned.
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40       If x and y are NaN, a NaN shall be returned.
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ERRORS

43       No errors are defined.
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45       The following sections are informative.
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EXAMPLES

48       None.
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APPLICATION USAGE

51       None.
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RATIONALE

54       None.
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FUTURE DIRECTIONS

57       None.
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SEE ALSO

60       fdim(), fmin()
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62       The Base Definitions volume of POSIX.1‐2008, <math.h>
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65       Portions of this text are reprinted and reproduced in  electronic  form
66       from IEEE Std 1003.1, 2013 Edition, Standard for Information Technology
67       -- Portable Operating System Interface (POSIX),  The  Open  Group  Base
68       Specifications Issue 7, Copyright (C) 2013 by the Institute of Electri‐
69       cal and Electronics Engineers,  Inc  and  The  Open  Group.   (This  is
70       POSIX.1-2008  with  the  2013  Technical Corrigendum 1 applied.) In the
71       event of any discrepancy between this version and the original IEEE and
72       The  Open Group Standard, the original IEEE and The Open Group Standard
73       is the referee document. The original Standard can be  obtained  online
74       at http://www.unix.org/online.html .
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76       Any  typographical  or  formatting  errors that appear in this page are
77       most likely to have been introduced during the conversion of the source
78       files  to  man page format. To report such errors, see https://www.ker‐
79       nel.org/doc/man-pages/reporting_bugs.html .
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83IEEE/The Open Group                  2013                             FMAX(3P)
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