1isinf(3M)               Mathematical Library Functions               isinf(3M)
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NAME

6       isinf - test for infinity
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SYNOPSIS

9       c99 [ flag... ] file... -lm [ library... ]
10       #include <math.h>
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12       int isinf(real-floating x);
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DESCRIPTION

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

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

26       No errors are defined.
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ATTRIBUTES

29       See attributes(5) for descriptions of the following attributes:
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34       ┌─────────────────────────────┬─────────────────────────────┐
35       │      ATTRIBUTE TYPE         │      ATTRIBUTE VALUE        │
36       ├─────────────────────────────┼─────────────────────────────┤
37       │Interface Stability          │Standard                     │
38       ├─────────────────────────────┼─────────────────────────────┤
39       │MT-Level                     │MT-Safe                      │
40       └─────────────────────────────┴─────────────────────────────┘
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SEE ALSO

43       fpclassify(3M),  isfinite(3M),  isnan(3M), isnormal(3M), math.h(3HEAD),
44       signbit(3M), attributes(5), standards(5)
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48SunOS 5.11                        17 Nov 2008                        isinf(3M)
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