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ieeeck.f(3) LAPACK ieeeck.f(3)

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.
ZERO 
          ZERO is REAL
          Must contain the value 0.0
          This is passed to prevent the compiler from optimizing
          away this code.
ONE 
          ONE 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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