1ISNORMAL(P)                POSIX Programmer's Manual               ISNORMAL(P)
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NAME

6       isnormal - test for a normal value
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SYNOPSIS

9       #include <math.h>
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11       int isnormal(real-floating x);
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DESCRIPTION

15       The isnormal() macro shall determine whether its argument value is nor‐
16       mal (neither zero, subnormal, infinite, nor NaN).  First,  an  argument
17       represented  in  a  format wider than its semantic type is converted to
18       its semantic type. Then determination is based on the type of the argu‐
19       ment.
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RETURN VALUE

22       The  isnormal()  macro shall return a non-zero value if and only if its
23       argument has a normal value.
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ERRORS

26       No errors are defined.
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28       The following sections are informative.
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EXAMPLES

31       None.
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APPLICATION USAGE

34       None.
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RATIONALE

37       None.
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FUTURE DIRECTIONS

40       None.
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SEE ALSO

43       fpclassify() , isfinite() , isinf() , isnan() , signbit()  ,  the  Base
44       Definitions volume of IEEE Std 1003.1-2001, <math.h>
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47       Portions  of  this text are reprinted and reproduced in electronic form
48       from IEEE Std 1003.1, 2003 Edition, Standard for Information Technology
49       --  Portable  Operating  System  Interface (POSIX), The Open Group Base
50       Specifications Issue 6, Copyright (C) 2001-2003  by  the  Institute  of
51       Electrical  and  Electronics  Engineers, Inc and The Open Group. In the
52       event of any discrepancy between this version and the original IEEE and
53       The  Open Group Standard, the original IEEE and The Open Group Standard
54       is the referee document. The original Standard can be  obtained  online
55       at http://www.opengroup.org/unix/online.html .
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59IEEE/The Open Group                  2003                          ISNORMAL(P)
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