"atomic bomb" commit. Reorganized OpenCV directory structure

2010-05-11 17:44:00 +00:00
commit 127d6649a1
1761 changed files with 1766340 additions and 0 deletions
--- a/3rdparty/lapack/sorgl2.c
+++ b/3rdparty/lapack/sorgl2.c
@@ -0,0 +1,162 @@
+#include "clapack.h"
+
+/* Subroutine */ int sorgl2_(integer *m, integer *n, integer *k, real *a, 
+	integer *lda, real *tau, real *work, integer *info)
+{
+    /* System generated locals */
+    integer a_dim1, a_offset, i__1, i__2;
+    real r__1;
+
+    /* Local variables */
+    integer i__, j, l;
+    extern /* Subroutine */ int sscal_(integer *, real *, real *, integer *), 
+	    slarf_(char *, integer *, integer *, real *, integer *, real *, 
+	    real *, integer *, real *), xerbla_(char *, integer *);
+
+
+/*  -- LAPACK routine (version 3.1) -- */
+/*     Univ. of Tennessee, Univ. of California Berkeley and NAG Ltd.. */
+/*     November 2006 */
+
+/*     .. Scalar Arguments .. */
+/*     .. */
+/*     .. Array Arguments .. */
+/*     .. */
+
+/*  Purpose */
+/*  ======= */
+
+/*  SORGL2 generates an m by n real matrix Q with orthonormal rows, */
+/*  which is defined as the first m rows of a product of k elementary */
+/*  reflectors of order n */
+
+/*        Q  =  H(k) . . . H(2) H(1) */
+
+/*  as returned by SGELQF. */
+
+/*  Arguments */
+/*  ========= */
+
+/*  M       (input) INTEGER */
+/*          The number of rows of the matrix Q. M >= 0. */
+
+/*  N       (input) INTEGER */
+/*          The number of columns of the matrix Q. N >= M. */
+
+/*  K       (input) INTEGER */
+/*          The number of elementary reflectors whose product defines the */
+/*          matrix Q. M >= K >= 0. */
+
+/*  A       (input/output) REAL array, dimension (LDA,N) */
+/*          On entry, the i-th row must contain the vector which defines */
+/*          the elementary reflector H(i), for i = 1,2,...,k, as returned */
+/*          by SGELQF in the first k rows of its array argument A. */
+/*          On exit, the m-by-n matrix Q. */
+
+/*  LDA     (input) INTEGER */
+/*          The first dimension of the array A. LDA >= max(1,M). */
+
+/*  TAU     (input) REAL array, dimension (K) */
+/*          TAU(i) must contain the scalar factor of the elementary */
+/*          reflector H(i), as returned by SGELQF. */
+
+/*  WORK    (workspace) REAL array, dimension (M) */
+
+/*  INFO    (output) INTEGER */
+/*          = 0: successful exit */
+/*          < 0: if INFO = -i, the i-th argument has an illegal value */
+
+/*  ===================================================================== */
+
+/*     .. Parameters .. */
+/*     .. */
+/*     .. Local Scalars .. */
+/*     .. */
+/*     .. External Subroutines .. */
+/*     .. */
+/*     .. Intrinsic Functions .. */
+/*     .. */
+/*     .. Executable Statements .. */
+
+/*     Test the input arguments */
+
+    /* Parameter adjustments */
+    a_dim1 = *lda;
+    a_offset = 1 + a_dim1;
+    a -= a_offset;
+    --tau;
+    --work;
+
+    /* Function Body */
+    *info = 0;
+    if (*m < 0) {
+	*info = -1;
+    } else if (*n < *m) {
+	*info = -2;
+    } else if (*k < 0 || *k > *m) {
+	*info = -3;
+    } else if (*lda < max(1,*m)) {
+	*info = -5;
+    }
+    if (*info != 0) {
+	i__1 = -(*info);
+	xerbla_("SORGL2", &i__1);
+	return 0;
+    }
+
+/*     Quick return if possible */
+
+    if (*m <= 0) {
+	return 0;
+    }
+
+    if (*k < *m) {
+
+/*        Initialise rows k+1:m to rows of the unit matrix */
+
+	i__1 = *n;
+	for (j = 1; j <= i__1; ++j) {
+	    i__2 = *m;
+	    for (l = *k + 1; l <= i__2; ++l) {
+		a[l + j * a_dim1] = 0.f;
+/* L10: */
+	    }
+	    if (j > *k && j <= *m) {
+		a[j + j * a_dim1] = 1.f;
+	    }
+/* L20: */
+	}
+    }
+
+    for (i__ = *k; i__ >= 1; --i__) {
+
+/*        Apply H(i) to A(i:m,i:n) from the right */
+
+	if (i__ < *n) {
+	    if (i__ < *m) {
+		a[i__ + i__ * a_dim1] = 1.f;
+		i__1 = *m - i__;
+		i__2 = *n - i__ + 1;
+		slarf_("Right", &i__1, &i__2, &a[i__ + i__ * a_dim1], lda, &
+			tau[i__], &a[i__ + 1 + i__ * a_dim1], lda, &work[1]);
+	    }
+	    i__1 = *n - i__;
+	    r__1 = -tau[i__];
+	    sscal_(&i__1, &r__1, &a[i__ + (i__ + 1) * a_dim1], lda);
+	}
+	a[i__ + i__ * a_dim1] = 1.f - tau[i__];
+
+/*        Set A(i,1:i-1) to zero */
+
+	i__1 = i__ - 1;
+	for (l = 1; l <= i__1; ++l) {
+	    a[i__ + l * a_dim1] = 0.f;
+/* L30: */
+	}
+/* L40: */
+    }
+    return 0;
+
+/*     End of SORGL2 */
+
+} /* sorgl2_ */