ieeeck(3)                  Library Functions Manual                  ieeeck(3)

NAME
       ieeeck - ieeeck: verify inf and NaN are safe

SYNOPSIS
   Functions
       integer function ieeeck (ispec, zero, one)
           IEEECK

Detailed Description
Function Documentation
   integer function ieeeck (integer ispec, real zero, real one)
       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 infinity 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.

       Definition at line 81 of file ieeeck.f.

Author
       Generated automatically by Doxygen for LAPACK from the source code.

LAPACK                          Version 3.12.0                       ieeeck(3)