HPL_dswap(3) HPL Library Functions HPL_dswap(3) NAME HPL_dswap - y <-> x. SYNOPSIS #include "hpl.h" void HPL_dswap( const int N, double * X, const int INCX, double * Y, const int INCY ); DESCRIPTION HPL_dswap swaps the vectors x and y. ARGUMENTS N (local input) const int On entry, N specifies the length of the vectors x and y. N must be at least zero. X (local input/output) double * On entry, X is an incremented array of dimension at least ( 1 + ( n - 1 ) * abs( INCX ) ) that contains the vector x. On exit, the entries of the incremented array X are updated with the en- tries of the incremented array Y. INCX (local input) const int On entry, INCX specifies the increment for the elements of X. INCX must not be zero. Y (local input/output) double * On entry, Y is an incremented array of dimension at least ( 1 + ( n - 1 ) * abs( INCY ) ) that contains the vector y. On exit, the entries of the incremented array Y are updated with the en- tries of the incremented array X. INCY (local input) const int On entry, INCY specifies the increment for the elements of Y. INCY must not be zero. EXAMPLE #include "hpl.h" int main(int argc, char *argv[]) { double x[3], y[3]; x[0] = 1.0; x[1] = 2.0; x[2] = 3.0; y[0] = 4.0; y[1] = 5.0; y[2] = 6.0; HPL_dswap( 3, x, 1, y, 1 ); printf("x=[%f,%f,%f]\n", x[0], x[1], x[2]); printf("y=[%f,%f,%f]\n", y[0], y[1], y[2]); exit(0); return(0); } SEE ALSO HPL_daxpy (3), HPL_dcopy (3), HPL_dscal (3). HPL 2.3 December 2, 2018 HPL_dswap(3)
NAME | SYNOPSIS | DESCRIPTION | ARGUMENTS | EXAMPLE | SEE ALSO
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