isnormal(3M)isnormal(3M)NAMEisnormal() - floating-point test for normalized value
The macro determines whether its argument is a normalized value (nei‐
ther 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
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.
The macro returns a nonzero value if and only if its argument has a
normalized value. The macro raises no floating-point exceptions.
No errors are defined.
Make sure a value is normalized before continuing operations on it:
SEE ALSOfpclassify(3M), isfinite(3M), isinf(3M), isnan(3M), signbit(3M),