[] add metering mode to CLI

1 files changed, 125 insertions, 0 deletions

diff --git a/contrib/libs/clapack/zlaev2.c b/contrib/libs/clapack/zlaev2.c
new file mode 100644
index 0000000000..4a66392825
--- /dev/null
+++ b/contrib/libs/clapack/zlaev2.c
@@ -0,0 +1,125 @@
+/* zlaev2.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"
+
+/* Subroutine */ int zlaev2_(doublecomplex *a, doublecomplex *b, 
+	doublecomplex *c__, doublereal *rt1, doublereal *rt2, doublereal *cs1, 
+	 doublecomplex *sn1)
+{
+    /* System generated locals */
+    doublereal d__1, d__2, d__3;
+    doublecomplex z__1, z__2;
+
+    /* Builtin functions */
+    double z_abs(doublecomplex *);
+    void d_cnjg(doublecomplex *, doublecomplex *);
+
+    /* Local variables */
+    doublereal t;
+    doublecomplex w;
+    extern /* Subroutine */ int dlaev2_(doublereal *, doublereal *, 
+	    doublereal *, doublereal *, doublereal *, doublereal *, 
+	    doublereal *);
+
+
+/*  -- LAPACK auxiliary routine (version 3.2) -- */
+/*     Univ. of Tennessee, Univ. of California Berkeley and NAG Ltd.. */
+/*     November 2006 */
+
+/*     .. Scalar Arguments .. */
+/*     .. */
+
+/*  Purpose */
+/*  ======= */
+
+/*  ZLAEV2 computes the eigendecomposition of a 2-by-2 Hermitian matrix */
+/*     [  A         B  ] */
+/*     [  CONJG(B)  C  ]. */
+/*  On return, RT1 is the eigenvalue of larger absolute value, RT2 is the */
+/*  eigenvalue of smaller absolute value, and (CS1,SN1) is the unit right */
+/*  eigenvector for RT1, giving the decomposition */
+
+/*  [ CS1  CONJG(SN1) ] [    A     B ] [ CS1 -CONJG(SN1) ] = [ RT1  0  ] */
+/*  [-SN1     CS1     ] [ CONJG(B) C ] [ SN1     CS1     ]   [  0  RT2 ]. */
+
+/*  Arguments */
+/*  ========= */
+
+/*  A      (input) COMPLEX*16 */
+/*         The (1,1) element of the 2-by-2 matrix. */
+
+/*  B      (input) COMPLEX*16 */
+/*         The (1,2) element and the conjugate of the (2,1) element of */
+/*         the 2-by-2 matrix. */
+
+/*  C      (input) COMPLEX*16 */
+/*         The (2,2) element of the 2-by-2 matrix. */
+
+/*  RT1    (output) DOUBLE PRECISION */
+/*         The eigenvalue of larger absolute value. */
+
+/*  RT2    (output) DOUBLE PRECISION */
+/*         The eigenvalue of smaller absolute value. */
+
+/*  CS1    (output) DOUBLE PRECISION */
+/*  SN1    (output) COMPLEX*16 */
+/*         The vector (CS1, SN1) is a unit right eigenvector for RT1. */
+
+/*  Further Details */
+/*  =============== */
+
+/*  RT1 is accurate to a few ulps barring over/underflow. */
+
+/*  RT2 may be inaccurate if there is massive cancellation in the */
+/*  determinant A*C-B*B; higher precision or correctly rounded or */
+/*  correctly truncated arithmetic would be needed to compute RT2 */
+/*  accurately in all cases. */
+
+/*  CS1 and SN1 are accurate to a few ulps barring over/underflow. */
+
+/*  Overflow is possible only if RT1 is within a factor of 5 of overflow. */
+/*  Underflow is harmless if the input data is 0 or exceeds */
+/*     underflow_threshold / macheps. */
+
+/* ===================================================================== */
+
+/*     .. Parameters .. */
+/*     .. */
+/*     .. Local Scalars .. */
+/*     .. */
+/*     .. External Subroutines .. */
+/*     .. */
+/*     .. Intrinsic Functions .. */
+/*     .. */
+/*     .. Executable Statements .. */
+
+    if (z_abs(b) == 0.) {
+	w.r = 1., w.i = 0.;
+    } else {
+	d_cnjg(&z__2, b);
+	d__1 = z_abs(b);
+	z__1.r = z__2.r / d__1, z__1.i = z__2.i / d__1;
+	w.r = z__1.r, w.i = z__1.i;
+    }
+    d__1 = a->r;
+    d__2 = z_abs(b);
+    d__3 = c__->r;
+    dlaev2_(&d__1, &d__2, &d__3, rt1, rt2, cs1, &t);
+    z__1.r = t * w.r, z__1.i = t * w.i;
+    sn1->r = z__1.r, sn1->i = z__1.i;
+    return 0;
+
+/*     End of ZLAEV2 */
+
+} /* zlaev2_ */