aboutsummaryrefslogtreecommitdiffstats
path: root/contrib/libs/clapack/slapy2.c
diff options
context:
space:
mode:
authorshmel1k <shmel1k@ydb.tech>2022-09-02 12:44:59 +0300
committershmel1k <shmel1k@ydb.tech>2022-09-02 12:44:59 +0300
commit90d450f74722da7859d6f510a869f6c6908fd12f (patch)
tree538c718dedc76cdfe37ad6d01ff250dd930d9278 /contrib/libs/clapack/slapy2.c
parent01f64c1ecd0d4ffa9e3a74478335f1745f26cc75 (diff)
downloadydb-90d450f74722da7859d6f510a869f6c6908fd12f.tar.gz
[] add metering mode to CLI
Diffstat (limited to 'contrib/libs/clapack/slapy2.c')
-rw-r--r--contrib/libs/clapack/slapy2.c73
1 files changed, 73 insertions, 0 deletions
diff --git a/contrib/libs/clapack/slapy2.c b/contrib/libs/clapack/slapy2.c
new file mode 100644
index 0000000000..e048cac762
--- /dev/null
+++ b/contrib/libs/clapack/slapy2.c
@@ -0,0 +1,73 @@
+/* slapy2.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"
+
+doublereal slapy2_(real *x, real *y)
+{
+ /* System generated locals */
+ real ret_val, r__1;
+
+ /* Builtin functions */
+ double sqrt(doublereal);
+
+ /* Local variables */
+ real w, z__, xabs, yabs;
+
+
+/* -- LAPACK auxiliary routine (version 3.2) -- */
+/* Univ. of Tennessee, Univ. of California Berkeley and NAG Ltd.. */
+/* November 2006 */
+
+/* .. Scalar Arguments .. */
+/* .. */
+
+/* Purpose */
+/* ======= */
+
+/* SLAPY2 returns sqrt(x**2+y**2), taking care not to cause unnecessary */
+/* overflow. */
+
+/* Arguments */
+/* ========= */
+
+/* X (input) REAL */
+/* Y (input) REAL */
+/* X and Y specify the values x and y. */
+
+/* ===================================================================== */
+
+/* .. Parameters .. */
+/* .. */
+/* .. Local Scalars .. */
+/* .. */
+/* .. Intrinsic Functions .. */
+/* .. */
+/* .. Executable Statements .. */
+
+ xabs = dabs(*x);
+ yabs = dabs(*y);
+ w = dmax(xabs,yabs);
+ z__ = dmin(xabs,yabs);
+ if (z__ == 0.f) {
+ ret_val = w;
+ } else {
+/* Computing 2nd power */
+ r__1 = z__ / w;
+ ret_val = w * sqrt(r__1 * r__1 + 1.f);
+ }
+ return ret_val;
+
+/* End of SLAPY2 */
+
+} /* slapy2_ */