mirror of
https://github.com/opencv/opencv.git
synced 2024-12-02 16:00:17 +08:00
59 lines
1.5 KiB
C
59 lines
1.5 KiB
C
#include "clapack.h"
|
|
#include <float.h>
|
|
#include <stdio.h>
|
|
|
|
/* *********************************************************************** */
|
|
|
|
doublereal dlamc3_(doublereal *a, doublereal *b)
|
|
{
|
|
/* System generated locals */
|
|
doublereal ret_val;
|
|
|
|
|
|
/* -- LAPACK auxiliary routine (version 3.1) -- */
|
|
/* Univ. of Tennessee, Univ. of California Berkeley and NAG Ltd.. */
|
|
/* November 2006 */
|
|
|
|
/* .. Scalar Arguments .. */
|
|
/* .. */
|
|
|
|
/* Purpose */
|
|
/* ======= */
|
|
|
|
/* DLAMC3 is intended to force A and B to be stored prior to doing */
|
|
/* the addition of A and B , for use in situations where optimizers */
|
|
/* might hold one of these in a register. */
|
|
|
|
/* Arguments */
|
|
/* ========= */
|
|
|
|
/* A (input) DOUBLE PRECISION */
|
|
/* B (input) DOUBLE PRECISION */
|
|
/* The values A and B. */
|
|
|
|
/* ===================================================================== */
|
|
|
|
/* .. Executable Statements .. */
|
|
|
|
ret_val = *a + *b;
|
|
|
|
return ret_val;
|
|
|
|
/* End of DLAMC3 */
|
|
|
|
} /* dlamc3_ */
|
|
|
|
|
|
/* simpler version of dlamch for the case of IEEE754-compliant FPU module by Piotr Luszczek S.
|
|
taken from http://www.mail-archive.com/numpy-discussion@lists.sourceforge.net/msg02448.html */
|
|
|
|
#ifndef DBL_DIGITS
|
|
#define DBL_DIGITS 53
|
|
#endif
|
|
|
|
const doublereal lapack_dlamch_tab[] =
|
|
{
|
|
0, FLT_RADIX, DBL_EPSILON, DBL_MAX_EXP, DBL_MIN_EXP, DBL_DIGITS, DBL_MAX,
|
|
DBL_EPSILON*FLT_RADIX, 1, DBL_MIN*(1 + DBL_EPSILON), DBL_MIN
|
|
};
|