qr_solve.h File Reference

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Functions
void	daxpy (int n, float da, float dx[], int incx, float dy[], int incy)
float	ddot (int n, float dx[], int incx, float dy[], int incy)
float	dnrm2 (int n, float x[], int incx)
void	dqrank (float a[], int lda, int m, int n, float tol, int *kr, int jpvt[], float qraux[])
void	dqrdc (float a[], int lda, int n, int p, float qraux[], int jpvt[], float work[], int job)
int	dqrls (float a[], int lda, int m, int n, float tol, int *kr, float b[], float x[], float rsd[], int jpvt[], float qraux[], int itask)
void	dqrlss (float a[], int lda, int m, int n, int kr, float b[], float x[], float rsd[], int jpvt[], float qraux[])
int	dqrsl (float a[], int lda, int n, int k, float qraux[], float y[], float qy[], float qty[], float b[], float rsd[], float ab[], int job)
void	drotg (float *sa, float *sb, float *c, float *s)
void	dscal (int n, float sa, float x[], int incx)
void	dswap (int n, float x[], int incx, float y[], int incy)
void	qr_solve (int m, int n, float a[], float b[], float x[])

Function Documentation

void daxpy	(	int	n,
		float	da,
		float	dx[],
		int	incx,
		float	dy[],
		int	incy
	)

Definition at line 23 of file qr_solve.c.

Referenced by dqrdc(), and dqrsl().

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float ddot	(	int	n,
		float	dx[],
		int	incx,
		float	dy[],
		int	incy
	)

Definition at line 144 of file qr_solve.c.

Referenced by dqrdc(), and dqrsl().

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float dnrm2	(	int	n,
		float	x[],
		int	incx
	)

Definition at line 264 of file qr_solve.c.

References scale.

Referenced by dqrdc().

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void dqrank	(	float	a[],
		int	lda,
		int	m,
		int	n,
		float	tol,
		int *	kr,
		int	jpvt[],
		float	qraux[]
	)

Definition at line 357 of file qr_solve.c.

References dqrdc(), and i4_min().

Referenced by dqrls().

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void dqrdc	(	float	a[],
		int	lda,
		int	n,
		int	p,
		float	qraux[],
		int	jpvt[],
		float	work[],
		int	job
	)

Definition at line 465 of file qr_solve.c.

References daxpy(), ddot(), dnrm2(), dscal(), dswap(), i4_min(), p, r8_max(), and r8_sign().

Referenced by dqrank().

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int dqrls	(	float	a[],
		int	lda,
		int	m,
		int	n,
		float	tol,
		int *	kr,
		float	b[],
		float	x[],
		float	rsd[],
		int	jpvt[],
		float	qraux[],
		int	itask
	)

Definition at line 714 of file qr_solve.c.

References DEBUG_FPRINTF, dqrank(), and dqrlss().

Referenced by qr_solve().

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void dqrlss	(	float	a[],
		int	lda,
		int	m,
		int	n,
		int	kr,
		float	b[],
		float	x[],
		float	rsd[],
		int	jpvt[],
		float	qraux[]
	)

Definition at line 867 of file qr_solve.c.

References dqrsl(), and UNUSED.

Referenced by dqrls().

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int dqrsl	(	float	a[],
		int	lda,
		int	n,
		int	k,
		float	qraux[],
		float	y[],
		float	qy[],
		float	qty[],
		float	b[],
		float	rsd[],
		float	ab[],
		int	job
	)

Definition at line 985 of file qr_solve.c.

References daxpy(), ddot(), and i4_min().

Referenced by dqrlss().

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void drotg	(	float *	sa,
		float *	sb,
		float *	c,
		float *	s
	)

void dscal	(	int	n,
		float	sa,
		float	x[],
		int	incx
	)

Definition at line 1344 of file qr_solve.c.

Referenced by dqrdc().

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void dswap	(	int	n,
		float	x[],
		int	incx,
		float	y[],
		int	incy
	)

Definition at line 1433 of file qr_solve.c.

Referenced by dqrdc().

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void qr_solve	(	int	m,
		int	n,
		float	a[],
		float	b[],
		float	x[]
	)

Definition at line 1548 of file qr_solve.c.

References dqrls(), r8_epsilon(), r8mat_amax(), r8mat_copy_new(), and UNUSED.

Referenced by qr_solve_wrapper().

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