__isinf

Name

__isinf -- test for infinity

Synopsis

int __isinf(double arg);

Description

__isinf() has the same specification as isinf() in POSIX 1003.1-2008 (ISO/IEC 9945-2009), except that the argument type for __isinf() is known to be double.

__isinf() is not in the source standard; it is only in the binary standard.