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isnormal(3M) isnormal(3M)
NAME
isnormal() - floating-point test for normalized value
SYNOPSIS
floating-type
DESCRIPTION
The macro determines whether its argument is a normalized value (neither zero, denormalized, infinite, nor NaN). The argument must be of
floating type, and classification is based on the type of the argument. For HP Integrity servers, the argument can be any floating type.
For PA-RISC, the argument must be either or
USAGE
To use the macro, compile either with the default option or with the and options. Make sure your program includes Link in the math library
by specifying on the compiler or linker command line.
RETURN VALUE
The macro returns a nonzero value if and only if its argument has a normalized value. The macro raises no floating-point exceptions.
ERRORS
No errors are defined.
EXAMPLES
Make sure a value is normalized before continuing operations on it:
SEE ALSO
fpclassify(3M), isfinite(3M), isinf(3M), isnan(3M), signbit(3M), math(5).
STANDARDS CONFORMANCE
isnormal(3M)
