daxpy - compute y := alpha * x + y
SUBROUTINE DAXPY(N, ALPHA, X, INCX, Y, INCY) INTEGER N, INCX, INCY DOUBLE PRECISION ALPHA DOUBLE PRECISION X(*), Y(*) SUBROUTINE DAXPY_64(N, ALPHA, X, INCX, Y, INCY) INTEGER*8 N, INCX, INCY DOUBLE PRECISION ALPHA DOUBLE PRECISION X(*), Y(*) F95 INTERFACE SUBROUTINE AXPY(N, ALPHA, X, INCX, Y, INCY) INTEGER :: N, INCX, INCY REAL(8) :: ALPHA REAL(8), DIMENSION(:) :: X, Y SUBROUTINE AXPY_64(N, ALPHA, X, INCX, Y, INCY) INTEGER(8) :: N, INCX, INCY REAL(8) :: ALPHA REAL(8), DIMENSION(:) :: X, Y C INTERFACE #include <sunperf.h> void daxpy(int n, double alpha, double *x, int incx, double *y, int incy); void daxpy_64(long n, double alpha, double *x, long incx, double *y, long incy);
Oracle Solaris Studio Performance Library daxpy(3P) NAME daxpy - compute y := alpha * x + y SYNOPSIS SUBROUTINE DAXPY(N, ALPHA, X, INCX, Y, INCY) INTEGER N, INCX, INCY DOUBLE PRECISION ALPHA DOUBLE PRECISION X(*), Y(*) SUBROUTINE DAXPY_64(N, ALPHA, X, INCX, Y, INCY) INTEGER*8 N, INCX, INCY DOUBLE PRECISION ALPHA DOUBLE PRECISION X(*), Y(*) F95 INTERFACE SUBROUTINE AXPY(N, ALPHA, X, INCX, Y, INCY) INTEGER :: N, INCX, INCY REAL(8) :: ALPHA REAL(8), DIMENSION(:) :: X, Y SUBROUTINE AXPY_64(N, ALPHA, X, INCX, Y, INCY) INTEGER(8) :: N, INCX, INCY REAL(8) :: ALPHA REAL(8), DIMENSION(:) :: X, Y C INTERFACE #include <sunperf.h> void daxpy(int n, double alpha, double *x, int incx, double *y, int incy); void daxpy_64(long n, double alpha, double *x, long incx, double *y, long incy); PURPOSE daxpy compute y := alpha * x + y where alpha is a scalar and x and y are n-vectors. ARGUMENTS N (input) On entry, N specifies the number of elements in the vector. N must be at least one for the subroutine to have any visible effect. Unchanged on exit. ALPHA (input) On entry, ALPHA specifies the scalar alpha. Unchanged on exit. X (input) ( 1 + ( n - 1 )*abs( INCX ) ). Before entry, the incremented array X must contain the vector x. Unchanged on exit. INCX (input) On entry, INCX specifies the increment for the elements of X. Unchanged on exit. Y (input/output) ( 1 + ( n - 1 )*abs( INCY ) ). On entry, the incremented array Y must contain the vector y. On exit, Y is overwritten by the updated vector y. INCY (input) On entry, INCY specifies the increment for the elements of Y. Unchanged on exit. 7 Nov 2015 daxpy(3P)