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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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