slaisnan.f man page

slaisnan.f

Synopsis

Functions/Subroutines

logical function slaisnan (SIN1, SIN2)
SLAISNAN tests input for NaN by comparing two arguments for inequality.

Function/Subroutine Documentation

logical function slaisnan (real, intent(in) SIN1, real, intent(in) SIN2)

SLAISNAN tests input for NaN by comparing two arguments for inequality.  

Purpose:

 This routine is not for general use.  It exists solely to avoid
 over-optimization in SISNAN.

 SLAISNAN checks for NaNs by comparing its two arguments for
 inequality.  NaN is the only floating-point value where NaN != NaN
 returns .TRUE.  To check for NaNs, pass the same variable as both
 arguments.

 A compiler must assume that the two arguments are
 not the same variable, and the test will not be optimized away.
 Interprocedural or whole-program optimization may delete this
 test.  The ISNAN functions will be replaced by the correct
 Fortran 03 intrinsic once the intrinsic is widely available.
Parameters:

SIN1

          SIN1 is REAL

SIN2

          SIN2 is REAL
          Two numbers to compare for inequality.
Author:

Univ. of Tennessee

Univ. of California Berkeley

Univ. of Colorado Denver

NAG Ltd.

Date:

June 2017

Definition at line 76 of file slaisnan.f.

Author

Generated automatically by Doxygen for LAPACK from the source code.

Referenced By

The man page slaisnan(3) is an alias of slaisnan.f(3).

Tue Nov 14 2017 Version 3.8.0 LAPACK