mirror of https://github.com/opencv/opencv.git
Open Source Computer Vision Library
https://opencv.org/
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
46 lines
1.4 KiB
46 lines
1.4 KiB
#include "clapack.h" |
|
|
|
logical dlaisnan_(doublereal *din1, doublereal *din2) |
|
{ |
|
/* System generated locals */ |
|
logical ret_val; |
|
|
|
|
|
/* -- LAPACK auxiliary routine (version 3.1) -- */ |
|
/* Univ. of Tennessee, Univ. of California Berkeley and NAG Ltd.. */ |
|
/* November 2006 */ |
|
|
|
/* .. Scalar Arguments .. */ |
|
/* .. */ |
|
|
|
/* 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. */ |
|
|
|
/* Strictly speaking, Fortran does not allow aliasing of function */ |
|
/* arguments. So 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. */ |
|
|
|
/* Arguments */ |
|
/* ========= */ |
|
|
|
/* DIN1 (input) DOUBLE PRECISION */ |
|
/* DIN2 (input) DOUBLE PRECISION */ |
|
/* Two numbers to compare for inequality. */ |
|
|
|
/* ===================================================================== */ |
|
|
|
/* .. Executable Statements .. */ |
|
ret_val = *din1 != *din2; |
|
return ret_val; |
|
} /* dlaisnan_ */
|
|
|