axpy - axpy: y = ax + y

Generated automatically by Doxygen for LAPACK from the source code. Version 3.12.0 Sun Jul 20 2025 01:40:05 axpy(3)

subroutinecaxpy(integern,complexca,complex,dimension(*)cx,integerincx,complex,dimension(*)cy,integerincy)CAXPYPurpose: CAXPY constant times a vector plus a vector. ParametersN N is INTEGER number of elements in input vector(s) CA CA is COMPLEX On entry, CA specifies the scalar alpha. CX CX is COMPLEX array, dimension ( 1 + ( N - 1 )*abs( INCX ) ) INCX INCX is INTEGER storage spacing between elements of CX CY CY is COMPLEX array, dimension ( 1 + ( N - 1 )*abs( INCY ) ) INCY INCY is INTEGER storage spacing between elements of CY Author Univ. of Tennessee Univ. of California Berkeley Univ. of Colorado Denver NAG Ltd. FurtherDetails: jack dongarra, linpack, 3/11/78. modified 12/3/93, array(1) declarations changed to array(*) subroutinedaxpy(integern,doubleprecisionda,doubleprecision,dimension(*)dx,integerincx,doubleprecision,dimension(*)dy,integerincy)DAXPYPurpose: DAXPY constant times a vector plus a vector. uses unrolled loops for increments equal to one. ParametersN N is INTEGER number of elements in input vector(s) DA DA is DOUBLE PRECISION On entry, DA specifies the scalar alpha. DX DX is DOUBLE PRECISION array, dimension ( 1 + ( N - 1 )*abs( INCX ) ) INCX INCX is INTEGER storage spacing between elements of DX DY DY is DOUBLE PRECISION array, dimension ( 1 + ( N - 1 )*abs( INCY ) ) INCY INCY is INTEGER storage spacing between elements of DY Author Univ. of Tennessee Univ. of California Berkeley Univ. of Colorado Denver NAG Ltd. FurtherDetails: jack dongarra, linpack, 3/11/78. modified 12/3/93, array(1) declarations changed to array(*) subroutinesaxpy(integern,realsa,real,dimension(*)sx,integerincx,real,dimension(*)sy,integerincy)SAXPYPurpose: SAXPY constant times a vector plus a vector. uses unrolled loops for increments equal to one. ParametersN N is INTEGER number of elements in input vector(s) SA SA is REAL On entry, SA specifies the scalar alpha. SX SX is REAL array, dimension ( 1 + ( N - 1 )*abs( INCX ) ) INCX INCX is INTEGER storage spacing between elements of SX SY SY is REAL array, dimension ( 1 + ( N - 1 )*abs( INCY ) ) INCY INCY is INTEGER storage spacing between elements of SY Author Univ. of Tennessee Univ. of California Berkeley Univ. of Colorado Denver NAG Ltd. FurtherDetails: jack dongarra, linpack, 3/11/78. modified 12/3/93, array(1) declarations changed to array(*) subroutinezaxpy(integern,complex*16za,complex*16,dimension(*)zx,integerincx,complex*16,dimension(*)zy,integerincy)ZAXPYPurpose: ZAXPY constant times a vector plus a vector. ParametersN N is INTEGER number of elements in input vector(s) ZA ZA is COMPLEX*16 On entry, ZA specifies the scalar alpha. ZX ZX is COMPLEX*16 array, dimension ( 1 + ( N - 1 )*abs( INCX ) ) INCX INCX is INTEGER storage spacing between elements of ZX ZY ZY is COMPLEX*16 array, dimension ( 1 + ( N - 1 )*abs( INCY ) ) INCY INCY is INTEGER storage spacing between elements of ZY Author Univ. of Tennessee Univ. of California Berkeley Univ. of Colorado Denver NAG Ltd. FurtherDetails: jack dongarra, 3/11/78. modified 12/3/93, array(1) declarations changed to array(*)

axpy - axpy: y = ax + y

Functions subroutine caxpy (n, ca, cx, incx, cy, incy) CAXPY subroutine daxpy (n, da, dx, incx, dy, incy) DAXPY subroutine saxpy (n, sa, sx, incx, sy, incy) SAXPY subroutine zaxpy (n, za, zx, incx, zy, incy) ZAXPY