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

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

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

23       The  functionality described on this reference page is aligned with the
24       ISO C standard. Any conflict between the  requirements  described  here
25       and  the  ISO C  standard is unintentional. This volume of POSIX.1‐2017
26       defers to the ISO C standard.
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28       These functions shall determine the  maximum  numeric  value  of  their
29       arguments.   NaN  arguments  shall  be  treated as missing data: if one
30       argument is a NaN and the other numeric,  then  these  functions  shall
31       choose the numeric value.
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RETURN VALUE

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

42       No errors are defined.
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44       The following sections are informative.
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EXAMPLES

47       None.
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APPLICATION USAGE

50       None.
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RATIONALE

53       None.
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FUTURE DIRECTIONS

56       None.
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SEE ALSO

59       fdim(), fmin()
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61       The Base Definitions volume of POSIX.1‐2017, <math.h>
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64       Portions of this text are reprinted and reproduced in  electronic  form
65       from  IEEE Std 1003.1-2017, Standard for Information Technology -- Por‐
66       table Operating System Interface (POSIX), The Open Group Base  Specifi‐
67       cations  Issue  7, 2018 Edition, Copyright (C) 2018 by the Institute of
68       Electrical and Electronics Engineers, Inc and The Open Group.   In  the
69       event of any discrepancy between this version and the original IEEE and
70       The Open Group Standard, the original IEEE and The Open Group  Standard
71       is  the  referee document. The original Standard can be obtained online
72       at http://www.opengroup.org/unix/online.html .
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74       Any typographical or formatting errors that appear  in  this  page  are
75       most likely to have been introduced during the conversion of the source
76       files to man page format. To report such errors,  see  https://www.ker‐
77       nel.org/doc/man-pages/reporting_bugs.html .
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81IEEE/The Open Group                  2017                             FMAX(3P)
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