diff ext/cblas/src/idamax.c @ 427:905e45637745

Add the CLAPACK and CBLAS/F2C-BLAS files we use

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/ext/cblas/src/idamax.c	Fri Sep 30 15:51:22 2016 +0100
@@ -0,0 +1,93 @@
+/* idamax.f -- translated by f2c (version 20061008).
+   You must link the resulting object file with libf2c:
+	on Microsoft Windows system, link with libf2c.lib;
+	on Linux or Unix systems, link with .../path/to/libf2c.a -lm
+	or, if you install libf2c.a in a standard place, with -lf2c -lm
+	-- in that order, at the end of the command line, as in
+		cc *.o -lf2c -lm
+	Source for libf2c is in /netlib/f2c/libf2c.zip, e.g.,
+
+		http://www.netlib.org/f2c/libf2c.zip
+*/
+
+#include "f2c.h"
+#include "blaswrap.h"
+
+integer idamax_(integer *n, doublereal *dx, integer *incx)
+{
+    /* System generated locals */
+    integer ret_val, i__1;
+    doublereal d__1;
+
+    /* Local variables */
+    integer i__, ix;
+    doublereal dmax__;
+
+/*     .. Scalar Arguments .. */
+/*     .. */
+/*     .. Array Arguments .. */
+/*     .. */
+
+/*  Purpose */
+/*  ======= */
+
+/*     finds the index of element having max. absolute value. */
+/*     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 */
+    --dx;
+
+    /* Function Body */
+    ret_val = 0;
+    if (*n < 1 || *incx <= 0) {
+	return ret_val;
+    }
+    ret_val = 1;
+    if (*n == 1) {
+	return ret_val;
+    }
+    if (*incx == 1) {
+	goto L20;
+    }
+
+/*        code for increment not equal to 1 */
+
+    ix = 1;
+    dmax__ = abs(dx[1]);
+    ix += *incx;
+    i__1 = *n;
+    for (i__ = 2; i__ <= i__1; ++i__) {
+	if ((d__1 = dx[ix], abs(d__1)) <= dmax__) {
+	    goto L5;
+	}
+	ret_val = i__;
+	dmax__ = (d__1 = dx[ix], abs(d__1));
+L5:
+	ix += *incx;
+/* L10: */
+    }
+    return ret_val;
+
+/*        code for increment equal to 1 */
+
+L20:
+    dmax__ = abs(dx[1]);
+    i__1 = *n;
+    for (i__ = 2; i__ <= i__1; ++i__) {
+	if ((d__1 = dx[i__], abs(d__1)) <= dmax__) {
+	    goto L30;
+	}
+	ret_val = i__;
+	dmax__ = (d__1 = dx[i__], abs(d__1));
+L30:
+	;
+    }
+    return ret_val;
+} /* idamax_ */