e3181f26b1
Changed MPI routines to hypre_MPI routines. Added hypre_printf, etc. routines. Added AUTOTEST tests to look for 'int' and 'MPI_' calls. Added a new approach for the Fortran interface (not implemented everywhere yet).
76 lines
1.4 KiB
C
76 lines
1.4 KiB
C
|
|
|
|
/* -- translated by f2c (version 19940927).
|
|
You must link the resulting object file with the libraries:
|
|
-lf2c -lm (in that order)
|
|
*/
|
|
|
|
#include "f2c.h"
|
|
#include "hypre_blas.h"
|
|
|
|
/* Subroutine */ HYPRE_Int drot_(integer *n, doublereal *dx, integer *incx,
|
|
doublereal *dy, integer *incy, doublereal *c, doublereal *s)
|
|
{
|
|
|
|
|
|
/* System generated locals */
|
|
|
|
/* Local variables */
|
|
static integer i;
|
|
static doublereal dtemp;
|
|
static integer ix, iy;
|
|
|
|
|
|
/* applies a plane rotation.
|
|
jack dongarra, linpack, 3/11/78.
|
|
modified 12/3/93, array(1) declarations changed to array(*)
|
|
|
|
|
|
|
|
Parameter adjustments
|
|
Function Body */
|
|
#define DY(I) dy[(I)-1]
|
|
#define DX(I) dx[(I)-1]
|
|
|
|
|
|
if (*n <= 0) {
|
|
return 0;
|
|
}
|
|
if (*incx == 1 && *incy == 1) {
|
|
goto L20;
|
|
}
|
|
|
|
/* code for unequal increments or equal increments not equal
|
|
to 1 */
|
|
|
|
ix = 1;
|
|
iy = 1;
|
|
if (*incx < 0) {
|
|
ix = (-(*n) + 1) * *incx + 1;
|
|
}
|
|
if (*incy < 0) {
|
|
iy = (-(*n) + 1) * *incy + 1;
|
|
}
|
|
for (i = 1; i <= *n; ++i) {
|
|
dtemp = *c * DX(ix) + *s * DY(iy);
|
|
DY(iy) = *c * DY(iy) - *s * DX(ix);
|
|
DX(ix) = dtemp;
|
|
ix += *incx;
|
|
iy += *incy;
|
|
/* L10: */
|
|
}
|
|
return 0;
|
|
|
|
/* code for both increments equal to 1 */
|
|
|
|
L20:
|
|
for (i = 1; i <= *n; ++i) {
|
|
dtemp = *c * DX(i) + *s * DY(i);
|
|
DY(i) = *c * DY(i) - *s * DX(i);
|
|
DX(i) = dtemp;
|
|
/* L30: */
|
|
}
|
|
return 0;
|
|
} /* drot_ */
|
|
|