IEEECK (3)  Linux Manuals
NAME
ieeeck.f 
SYNOPSIS
Functions/Subroutines
INTEGER function ieeeck (ISPEC, ZERO, ONE)
IEEECK
Function/Subroutine Documentation
INTEGER function ieeeck (integerISPEC, realZERO, realONE)
IEEECK
Purpose:

IEEECK is called from the ILAENV to verify that Infinity and possibly NaN arithmetic is safe (i.e. will not trap).
Parameters:

ISPEC
ISPEC is INTEGER Specifies whether to test just for inifinity arithmetic or whether to test for infinity and NaN arithmetic. = 0: Verify infinity arithmetic only. = 1: Verify infinity and NaN arithmetic.
ZEROZERO is REAL Must contain the value 0.0 This is passed to prevent the compiler from optimizing away this code.
ONEONE is REAL Must contain the value 1.0 This is passed to prevent the compiler from optimizing away this code. RETURN VALUE: INTEGER = 0: Arithmetic failed to produce the correct answers = 1: Arithmetic produced the correct answers
Author:

Univ. of Tennessee
Univ. of California Berkeley
Univ. of Colorado Denver
NAG Ltd.
Date:
 November 2011
Definition at line 83 of file ieeeck.f.
Author
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