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/*
* Scilab ( http://www.scilab.org/ ) - This file is part of Scilab
* Copyright (C) 2007-2008 - INRIA - Bruno JOFRET
*
* This file must be used under the terms of the CeCILL.
* This source file is licensed as described in the file COPYING, which
* you should have received as part of this distribution. The terms
* are also available at
* http://www.cecill.info/licences/Licence_CeCILL_V2-en.txt
*
*/
#ifndef __LAPACK_H__
#define __LAPACK_H__
#define getRelativeMachinePrecision() dlamch_("e", 1L)
#define getOverflowThreshold() dlamch_("o", 1L)
#define getUnderflowThreshold() dlamch_("u", 1L)
#define getOneNorm(lines,cols,in,work) dlange_("1", lines, cols, in, lines, work)
#define resolveSystemLinear(cols1,row2,cpytranIn1,pIpiv, transposeOfIn2,info) \
dgetrs_ ("N" ,cols1, row2, cpytranIn1 , cols1, pIpiv,transposeOfIn2, cols1, info) ;
/**
* -- LAPACK auxiliary routine (version 3.0) --
* Univ. of Tennessee, Univ. of California Berkeley, NAG Ltd.,
* Courant Institute, Argonne National Lab, and Rice University
* October 31, 1992
*
* Purpose
* =======
*
* DLAMCH determines double precision machine parameters.
*
* Arguments
* =========
*
* CMACH (input) CHARACTER*1
* Specifies the value to be returned by DLAMCH:
* = 'E' or 'e', DLAMCH := eps
* = 'S' or 's , DLAMCH := sfmin
* = 'B' or 'b', DLAMCH := base
* = 'P' or 'p', DLAMCH := eps*base
* = 'N' or 'n', DLAMCH := t
* = 'R' or 'r', DLAMCH := rnd
* = 'M' or 'm', DLAMCH := emin
* = 'U' or 'u', DLAMCH := rmin
* = 'L' or 'l', DLAMCH := emax
* = 'O' or 'o', DLAMCH := rmax
*
* where
*
* eps = relative machine precision
* sfmin = safe minimum, such that 1/sfmin does not overflow
* base = base of the machine
* prec = eps*base
* t = number of (base) digits in the mantissa
* rnd = 1.0 when rounding occurs in addition, 0.0 otherwise
* emin = minimum exponent before (gradual) underflow
* rmin = underflow threshold - base**(emin-1)
* emax = largest exponent before overflow
* rmax = overflow threshold - (base**emax)*(1-eps)
*
* =====================================================================
**/
extern double dlamch_ (char *CMACH, unsigned long int i);
extern double dlange_ (char* NORM, int* M, int* N, double* A, int* LDA , double* WORK);
extern double dgetrf_ (int* M, int* N , double* A , int* LDA , int* IPIV , int* INFO);
extern double dgecon_ (char* NORM, int* N, double* A, int* LDA, double* ANORM,
double* RCOND, double* WORK , int* IWORK, int* INFO ) ;
extern double dgetrs_ (char* TRANS, int* N, int* NRHS, double* A, int* LDA,
int* IPIV, double* B, int* LDB, int* INFO ) ;
extern double dgelsy_ (int* M, int* N, int* NRHS, double* A, int* LDA,
double* B, int* LDB, int* JPVT, double* RCOND, int* RANK,
double* WORK, int* LWORK, int* INFO) ;
#endif /* !__LAPACK_H__ */
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