ccmath.h

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/*  ccmath.h    CCMATH mathematics library source code.
 *
 *  Copyright (C)  2000   Daniel A. Atkinson    All rights reserved.
 *  This code may be redistributed under the terms of the GNU library
 *  public license (LGPL). ( See the lgpl.license file for details.)
 *
 * Modified by Soeren gebbert 2009/01/08
 * Removed al unused functions in GRASS. Only the linear algebra
 * functions are used.
 * ------------------------------------------------------------------------
 */
/*
   CCM
 
   Numerical Analysis Toolkit Header File
   ELF Shared Library Version
 */
/* Required for Shared Library */
#ifndef _CCMATH_H_
#define _CCMATH_H_
#define XMATH 1
 
/* Define File Pointers and Standard Library */
 
#include <stdio.h>
#include <stdlib.h>
#include <math.h>
 
/* Definitions of Types */
 
#ifndef NULL
#define NULL ((void *)0
#endif
 
/* Complex Types */
 
#ifndef CPX
struct complex {
    double re, im;
};
typedef struct complex Cpx;
 
#define CPX 1
#endif
 
/*   Linear Algebra     */
 
/* Real Linear Systems */
 
int minv(double *a, int n);
 
int psinv(double *v, int n);
 
int ruinv(double *a, int n);
 
int solv(double *a, double *b, int n);
 
int solvps(double *s, double *x, int n);
 
int solvru(double *a, double *b, int n);
 
void solvtd(double *a, double *b, double *c, double *x, int m);
 
void eigen(double *a, double *eval, int n);
 
void eigval(double *a, double *eval, int n);
 
double evmax(double *a, double *u, int n);
 
int svdval(double *d, double *a, int m, int n);
 
int sv2val(double *d, double *a, int m, int n);
 
int svduv(double *d, double *a, double *u, int m, double *v, int n);
 
int sv2uv(double *d, double *a, double *u, int m, double *v, int n);
 
int svdu1v(double *d, double *a, int m, double *v, int n);
 
int sv2u1v(double *d, double *a, int m, double *v, int n);
 
void mmul(double *mat, double *a, double *b, int n);
 
void rmmult(double *mat, double *a, double *b, int m, int k, int n);
 
void vmul(double *vp, double *mat, double *v, int n);
 
double vnrm(double *u, double *v, int n);
 
void matprt(double *a, int n, int m, char *fmt);
 
void fmatprt(FILE *fp, double *a, int n, int m, char *fmt);
 
void trnm(double *a, int n);
 
void mattr(double *a, double *b, int m, int n);
 
void otrma(double *at, double *u, double *a, int n);
 
void otrsm(double *st, double *u, double *s0, int n);
 
void mcopy(double *a, double *b, int m);
 
void ortho(double *evc, int n);
 
void smgen(double *a, double *eval, double *evec, int n);
 
/* utility routines for real symmertic eigensystems */
 
void house(double *a, double *d, double *ud, int n);
 
void housev(double *a, double *d, double *ud, int n);
 
int qreval(double *eval, double *ud, int n);
 
int qrevec(double *eval, double *evec, double *dp, int n);
 
/* utility routines for singular value decomposition */
 
int qrbdi(double *d, double *e, int n);
 
int qrbdv(double *d, double *e, double *u, int m, double *v, int n);
 
int qrbdu1(double *d, double *e, double *u, int m, double *v, int n);
 
void ldumat(double *a, double *u, int m, int n);
 
void ldvmat(double *a, double *v, int n);
 
void atou1(double *a, int m, int n);
 
void atovm(double *v, int n);
 
/* Complex Matrix Algebra */
 
int cminv(Cpx *a, int n);
 
int csolv(Cpx *a, Cpx *b, int n);
 
void heigvec(Cpx *a, double *eval, int n);
 
void heigval(Cpx *a, double *eval, int n);
 
double hevmax(Cpx *a, Cpx *u, int n);
 
void cmmul(Cpx *c, Cpx *a, Cpx *b, int n);
 
void cmmult(Cpx *c, Cpx *a, Cpx *b, int m, int k, int n);
 
void cvmul(Cpx *vp, Cpx *mat, Cpx *v, int n);
 
Cpx cvnrm(Cpx *u, Cpx *v, int n);
 
void cmprt(Cpx *a, int n, int m, char *fmt);
 
void trncm(Cpx *a, int n);
 
void hconj(Cpx *u, int n);
 
void cmattr(Cpx *a, Cpx *b, int m, int n);
 
void utrncm(Cpx *at, Cpx *u, Cpx *a, int n);
 
void utrnhm(Cpx *ht, Cpx *u, Cpx *h0, int n);
 
void cmcpy(Cpx *a, Cpx *b, int n);
 
void unitary(Cpx *u, int n);
 
void hmgen(Cpx *h, double *eval, Cpx *u, int n);
 
/* utility routines for hermitian eigen problems */
 
void chouse(Cpx *a, double *d, double *ud, int n);
 
void chousv(Cpx *a, double *d, double *ud, int n);
 
void qrecvc(double *eval, Cpx *evec, double *ud, int n);
#endif