PROLOG

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

NAME

       isgreaterequal — test if x is greater than or equal to y

SYNOPSIS

       #include <math.h>

       int isgreaterequal(real-floating x, real-floating y);

DESCRIPTION

       The functionality described on this reference page is aligned with the ISO C standard. Any
       conflict between the requirements described here and the ISO C standard is  unintentional.
       This volume of POSIX.1‐2008 defers to the ISO C standard.

       The  isgreaterequal()  macro shall determine whether its first argument is greater than or
       equal to its second argument.  The  value  of  isgreaterequal(x,  y)  shall  be  equal  to
       (x) ≥ (y);  however,  unlike  (x) ≥ (y),  isgreaterequal(x, y) shall not raise the invalid
       floating-point exception when x and y are unordered.

RETURN VALUE

       Upon  successful  completion,  the  isgreaterequal()  macro  shall  return  the  value  of
       (x) ≥ (y).

       If x or y is NaN, 0 shall be returned.

ERRORS

       No errors are defined.

       The following sections are informative.

EXAMPLES

       None.

APPLICATION USAGE

       The relational and equality operators support the usual mathematical relationships between
       numeric values. For any ordered pair of numeric values, exactly one of  the  relationships
       (less,  greater,  and equal) is true. Relational operators may raise the invalid floating-
       point exception when argument values are NaNs. For a NaN and a numeric value, or  for  two
       NaNs,  just  the unordered relationship is true. This macro is a quiet (non-floating-point
       exception raising) version of a relational operator. It facilitates writing efficient code
       that  accounts  for  NaNs  without  suffering the invalid floating-point exception. In the
       SYNOPSIS section, real-floating indicates that the argument  shall  be  an  expression  of
       real-floating type.

RATIONALE

       None.

FUTURE DIRECTIONS

       None.

SEE ALSO

       isgreater(), isless(), islessequal(), islessgreater(), isunordered()

       The Base Definitions volume of POSIX.1‐2008, <math.h>

COPYRIGHT

       Portions  of  this  text  are  reprinted  and  reproduced in electronic form from IEEE Std
       1003.1, 2013 Edition, Standard for Information Technology  --  Portable  Operating  System
       Interface  (POSIX),  The Open Group Base Specifications Issue 7, Copyright (C) 2013 by the
       Institute of Electrical and Electronics Engineers, Inc  and  The  Open  Group.   (This  is
       POSIX.1-2008  with  the  2013  Technical  Corrigendum  1  applied.)  In  the  event of any
       discrepancy between this version and the original IEEE and The Open  Group  Standard,  the
       original  IEEE  and The Open Group Standard is the referee document. The original Standard
       can be obtained online at http://www.unix.org/online.html .

       Any typographical or formatting errors that appear in this page are most  likely  to  have
       been  introduced  during  the conversion of the source files to man page format. To report
       such errors, see https://www.kernel.org/doc/man-pages/reporting_bugs.html .