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isinf(3m)

Mathematical Library Functions                                       isinf(3M)



NAME
       isinf - test for infinity

SYNOPSIS
       c99 [ flag... ] file... -lm [ library... ]
       #include <math.h>

       int isinf(real-floating x);

DESCRIPTION
       The  isinf() macro determines whether its argument value is an infinity
       (positive or negative). First, an  argument  represented  in  a  format
       wider  than  its  semantic type is converted to its semantic type. Then
       determination is based on the type of the argument.

RETURN VALUES
       The isinf() macro returns a non-zero value if and only if its  argument
       has an infinite value.

ERRORS
       No errors are defined.

ATTRIBUTES
       See attributes(7) for descriptions of the following attributes:


       tab() box; cw(2.75i) |cw(2.75i) lw(2.75i) |lw(2.75i)


       ATTRIBUTE  TYPEATTRIBUTE  VALUE _ Interface StabilityCommitted _ Avail‐
       abilitysystem/library/math  _  MT-LevelMT-Safe  _   StandardSee   stan‐
       dards(7).


SEE ALSO
       math.h(3HEAD),  fpclassify(3M),  isfinite(3M), isnan(3M), isnormal(3M),
       signbit(3M), attributes(7), standards(7)



Solaris 11.4                     27 Sept 2016                        isinf(3M)
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