Update to 2.0.0 tree from current Fremantle build

[opencv] / 3rdparty / lapack / sasum.c

diff --git a/3rdparty/lapack/sasum.c b/3rdparty/lapack/sasum.c
new file mode 100644 (file)
index 0000000..0cdc2b3
--- /dev/null
+++ b/3rdparty/lapack/sasum.c
@@ -0,0 +1,88 @@
+#include "clapack.h"
+
+doublereal sasum_(integer *n, real *sx, integer *incx)
+{
+    /* System generated locals */
+    integer i__1, i__2;
+    real ret_val, r__1, r__2, r__3, r__4, r__5, r__6;
+
+    /* Local variables */
+    integer i__, m, mp1, nincx;
+    real stemp;
+
+/*     .. Scalar Arguments .. */
+/*     .. */
+/*     .. Array Arguments .. */
+/*     .. */
+
+/*  Purpose */
+/*  ======= */
+
+/*     takes the sum of the absolute values. */
+/*     uses unrolled loops for increment equal to one. */
+/*     jack dongarra, linpack, 3/11/78. */
+/*     modified 3/93 to return if incx .le. 0. */
+/*     modified 12/3/93, array(1) declarations changed to array(*) */
+
+
+/*     .. Local Scalars .. */
+/*     .. */
+/*     .. Intrinsic Functions .. */
+/*     .. */
+    /* Parameter adjustments */
+    --sx;
+
+    /* Function Body */
+    ret_val = 0.f;
+    stemp = 0.f;
+    if (*n <= 0 || *incx <= 0) {
+       return ret_val;
+    }
+    if (*incx == 1) {
+       goto L20;
+    }
+
+/*        code for increment not equal to 1 */
+
+    nincx = *n * *incx;
+    i__1 = nincx;
+    i__2 = *incx;
+    for (i__ = 1; i__2 < 0 ? i__ >= i__1 : i__ <= i__1; i__ += i__2) {
+       stemp += (r__1 = sx[i__], dabs(r__1));
+/* L10: */
+    }
+    ret_val = stemp;
+    return ret_val;
+
+/*        code for increment equal to 1 */
+
+
+/*        clean-up loop */
+
+L20:
+    m = *n % 6;
+    if (m == 0) {
+       goto L40;
+    }
+    i__2 = m;
+    for (i__ = 1; i__ <= i__2; ++i__) {
+       stemp += (r__1 = sx[i__], dabs(r__1));
+/* L30: */
+    }
+    if (*n < 6) {
+       goto L60;
+    }
+L40:
+    mp1 = m + 1;
+    i__2 = *n;
+    for (i__ = mp1; i__ <= i__2; i__ += 6) {
+       stemp = stemp + (r__1 = sx[i__], dabs(r__1)) + (r__2 = sx[i__ + 1], 
+               dabs(r__2)) + (r__3 = sx[i__ + 2], dabs(r__3)) + (r__4 = sx[
+               i__ + 3], dabs(r__4)) + (r__5 = sx[i__ + 4], dabs(r__5)) + (
+               r__6 = sx[i__ + 5], dabs(r__6));
+/* L50: */
+    }
+L60:
+    ret_val = stemp;
+    return ret_val;
+} /* sasum_ */