NAME sswap - Exchange vectors x and y. SYNOPSIS SUBROUTINE SSWAP (N, X, INCY, Y, INCY ) INTEGER INCX, INCY, N REAL X( * ), Y( * ) #include <sunperf.h> void sswap(int n, float *sx, int incx, float *sy, int incy) ; PURPOSE SSWAP - Exchange x and y where x and y are n-vectors. PARAMETERS N - INTEGER. On entry, N specifies the number of elements in the vector. N must be at least one for the sub- routine to have any visible effect. Unchanged on exit. X - REAL array of DIMENSION at least ( 1 + ( n - 1 )*abs( INCX ) ). On entry, the incremented array X must contain the vector x. On exit, the y vector. INCX - INTEGER. On entry, INCX specifies the increment for the elements of X. INCX must not be zero. Unchanged on exit. Y - REAL array of DIMENSION at least ( 1 + ( m - 1 )*abs( INCY ) ). On entry, the incremented array Y must contain the vector y. On exit, the x vector. INCY - INTEGER. On entry, INCY specifies the increment for the elements of Y. INCY must not be zero. Unchanged on exit.
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