__fpclassify

Name

__fpclassify -- Classify real floating type

Synopsis

int __fpclassify(double arg);

Description

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

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