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fpclassify(3m) [sunos man page]

fpclassify(3M)						  Mathematical Library Functions					    fpclassify(3M)

NAME
fpclassify - classify real floating type SYNOPSIS
cc [ flag... ] file... -lm [ library... ] #include <math.h> int fpclassify(real-floating x); DESCRIPTION
The fpclassify() macro classifies its argument value as NaN, infinite, normal, subnormal, or zero. First, an argument represented in a for- mat wider than its semantic type is converted to its semantic type. Then classification is based on the type of the argument. RETURN VALUES
The fpclassify() macro returns the value of the number classification macro appropriate to the value of its argument. ERRORS
No errors are defined. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Interface Stability |Standard | +-----------------------------+-----------------------------+ |MT-Level |MT-Safe | +-----------------------------+-----------------------------+ SEE ALSO
isfinite(3M), isinf(3M), isnan(3M), isnormal(3M), math.h(3HEAD), signbit(3M), attributes(5), standards(5) SunOS 5.10 1 Sep 2002 fpclassify(3M)

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isfinite(3M)						  Mathematical Library Functions					      isfinite(3M)

NAME
isfinite - test for finite value SYNOPSIS
c99 [ flag... ] file... -lm [ library... ] #include <math.h> int isfinite(real-floating x); DESCRIPTION
The isfinite() macro determines whether its argument has a finite value (zero, subnormal, or normal, and not infinite or NaN). First, an argument represented in a format wider than its semantic type is converted to its semantic type. Then determination is based on the type of the argument. RETURN VALUES
The isfinite() macro returns a non-zero value if and only if its argument has a finite value. ERRORS
No errors are defined. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Interface Stability |Standard | +-----------------------------+-----------------------------+ |MT-Level |MT-Safe | +-----------------------------+-----------------------------+ SEE ALSO
fpclassify(3M), isinf(3M), isnan(3M), isnormal(3M), math.h(3HEAD), signbit(3M), attributes(5), standards(5) SunOS 5.11 12 Jul 2006 isfinite(3M)

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