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Shell Programming and Scripting
comparing values
Post 302295560 by Aditya.Gurgaon on Sunday 8th of March 2009 11:17:48 PM
03-09-2009
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LEARN ABOUT CENTOS
dlaisnan.f
dlaisnan.f(3) LAPACK dlaisnan.f(3) NAME
dlaisnan.f - SYNOPSIS
Functions/Subroutines LOGICAL function dlaisnan (DIN1, DIN2) DLAISNAN tests input for NaN by comparing two arguments for inequality. Function/Subroutine Documentation LOGICAL function dlaisnan (double precisionDIN1, double precisionDIN2) DLAISNAN 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 DISNAN. DLAISNAN 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: DIN1 DIN1 is DOUBLE PRECISION DIN2 DIN2 is DOUBLE PRECISION Two numbers to compare for inequality. Author: Univ. of Tennessee Univ. of California Berkeley Univ. of Colorado Denver NAG Ltd. Date: September 2012 Definition at line 75 of file dlaisnan.f. Author Generated automatically by Doxygen for LAPACK from the source code. Version 3.4.2 Tue Sep 25 2012 dlaisnan.f(3)