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author | shmel1k <shmel1k@ydb.tech> | 2022-09-02 12:44:59 +0300 |
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committer | shmel1k <shmel1k@ydb.tech> | 2022-09-02 12:44:59 +0300 |
commit | 90d450f74722da7859d6f510a869f6c6908fd12f (patch) | |
tree | 538c718dedc76cdfe37ad6d01ff250dd930d9278 /contrib/libs/cblas/izamax.c | |
parent | 01f64c1ecd0d4ffa9e3a74478335f1745f26cc75 (diff) | |
download | ydb-90d450f74722da7859d6f510a869f6c6908fd12f.tar.gz |
[] add metering mode to CLI
Diffstat (limited to 'contrib/libs/cblas/izamax.c')
-rw-r--r-- | contrib/libs/cblas/izamax.c | 93 |
1 files changed, 93 insertions, 0 deletions
diff --git a/contrib/libs/cblas/izamax.c b/contrib/libs/cblas/izamax.c new file mode 100644 index 0000000000..b4bd3c3409 --- /dev/null +++ b/contrib/libs/cblas/izamax.c @@ -0,0 +1,93 @@ +/* izamax.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 izamax_(integer *n, doublecomplex *zx, integer *incx) +{ + /* System generated locals */ + integer ret_val, i__1; + + /* Local variables */ + integer i__, ix; + doublereal smax; + extern doublereal dcabs1_(doublecomplex *); + +/* .. Scalar Arguments .. */ +/* .. */ +/* .. Array Arguments .. */ +/* .. */ + +/* Purpose */ +/* ======= */ + +/* finds the index of element having max. absolute value. */ +/* jack dongarra, 1/15/85. */ +/* modified 3/93 to return if incx .le. 0. */ +/* modified 12/3/93, array(1) declarations changed to array(*) */ + + +/* .. Local Scalars .. */ +/* .. */ +/* .. External Functions .. */ +/* .. */ + /* Parameter adjustments */ + --zx; + + /* 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; + smax = dcabs1_(&zx[1]); + ix += *incx; + i__1 = *n; + for (i__ = 2; i__ <= i__1; ++i__) { + if (dcabs1_(&zx[ix]) <= smax) { + goto L5; + } + ret_val = i__; + smax = dcabs1_(&zx[ix]); +L5: + ix += *incx; +/* L10: */ + } + return ret_val; + +/* code for increment equal to 1 */ + +L20: + smax = dcabs1_(&zx[1]); + i__1 = *n; + for (i__ = 2; i__ <= i__1; ++i__) { + if (dcabs1_(&zx[i__]) <= smax) { + goto L30; + } + ret_val = i__; + smax = dcabs1_(&zx[i__]); +L30: + ; + } + return ret_val; +} /* izamax_ */ |