isinff(3) - NetBSD Manual Pages

ISINFF(3)               NetBSD Library Functions Manual              ISINFF(3)


NAME
isinff, isnanf -- test for infinity or not-a-number
LIBRARY
Math Library (libm, -lm)
SYNOPSIS
#include <math.h> int isinff(float); int isnanf(float);
DESCRIPTION
The isinff() function returns 1 if the number is ``infinity'', otherwise 0. The isnanf() function returns 1 if the number is ``not-a-number'', other- wise 0.
SEE ALSO
isinf(3), isnan(3), math(3) IEEE Standard for Binary Floating-Point Arithmetic, Std 754-1985, ANSI.
BUGS
Neither the VAX nor the Tahoe floating point have distinguished values for either infinity or not-a-number. These routines always return 0 on those architectures. NetBSD 7.0 August 16, 1999 NetBSD 7.0

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