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