BCLS: Bound Constrained Least Squares

Version 0.1

lsqr.c File Reference

#include <stdlib.h>
#include <string.h>
#include <stdio.h>
#include <stdbool.h>
#include <math.h>
#include <cblas.h>

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Defines
#define	ZERO   0.0
#define	ONE   1.0
Functions
static double	d2norm (const double a, const double b)
static void	dload (const int n, const double alpha, double x[])
void	lsqr (int m, int n, void(*aprod)(int mode, int m, int n, double x[], double y[], void *UsrWrk), double damp, void *UsrWrk, double u[], double v[], double w[], double x[], double se[], double atol, double btol, double conlim, int itnlim, FILE *nout, int *istop_out, int *itn_out, double *anorm_out, double *acond_out, double *rnorm_out, double *arnorm_out, double *xnorm_out)

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Detailed Description

ISO C version of LSQR.

This file is a "line-by-line" translation of Michael Saunders's F77 version to ISO C.

Definition in file lsqr.c.

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Define Documentation

#define ONE   1.0

Definition at line 25 of file lsqr.c.

Referenced by lsqr().

#define ZERO   0.0

Definition at line 24 of file lsqr.c.

Referenced by lsqr().

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Function Documentation

static double d2norm	(	const double	a,
		const double	b
	)			[static]

Definition at line 34 of file lsqr.c.

Referenced by lsqr().

static void dload	(	const int	n,
		const double	alpha,
		double	x[]
	)			[static]

Examples:

/examples/bcsol.c.

Definition at line 47 of file lsqr.c.

Referenced by lsqr().

void lsqr	(	int	m,
		int	n,
		void(*)(int mode, int m, int n, double x[], double y[], void *UsrWrk)	aprod,
		double	damp,
		void *	UsrWrk,
		double	u[],
		double	v[],
		double	w[],
		double	x[],
		double	se[],
		double	atol,
		double	btol,
		double	conlim,
		int	itnlim,
		FILE *	nout,
		int *	istop_out,
		int *	itn_out,
		double *	anorm_out,
		double *	acond_out,
		double *	rnorm_out,
		double *	arnorm_out,
		double *	xnorm_out
	)

Definition at line 57 of file lsqr.c.

References cblas_dcopy(), cblas_dnrm2(), cblas_dscal(), d2norm(), dload(), ONE, and ZERO.

Referenced by bcls_newton_step_lsqr().

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