sy_add_i(3PI) Sun Interval Performance Library sy_add_i(3PI)NAMEsy_add_i - Symmetric matrix add and scale.
DESCRIPTION
C = ALPHA * A + BETA * B
The routine SY_ADD_I scales symmetric interval matrices A and B and
stores the sum in the interval matrix C. This routine returns immedi‐
ately if N is equal to zero.
SYNOPSIS
SUBROUTINE SY_ADD_I( A, B, C [, UPLO] [, ALPHA] [, BETA] )
INTERVAL, INTENT(IN) :: A(:,:), B(:,:)
INTERVAL, INTENT(OUT) :: C(:,:)
INTERVAL, INTENT(IN), OPTIONAL :: ALPHA, BETA
TYPE(blas_uplo_type), INTENT(IN), OPTIONAL :: UPLO
where
assuming A, B and C all symmetric matrices with the same shape (N,N).
ARGUMENTS
A (input)
On entry, A is array of DIMENSION (N,N)
Unchanged on exit.
B (input)
On entry, B is array of DIMENSION (N,N)
Unchanged on exit.
C (output)
On entry, C is array of DIMENSION (N,N).
On exit, C = ALPHA * A + BETA * B
ALPHA (input)
On entry, ALPHA specifies the scalar ALPHA.
Default value is ALPHA = [1,1].
Unchanged on exit.
BETA (input)
On entry, BETA specifies the scalar BETA.
Default value is BETA = [0,0].
Unchanged on exit.
UPLO(input)
Scalar element.
Specifies if the matrix operand is an upper or
lower tringular part of the matrix.
Possible values:
UPLO = blas_upper (default)
UPLO = blas_lower
Unchanged on exit.
ERRORS
blas_error_alloc
A, B or C is unallocated array
blas_error_shape
shape(A) /= shape(B) /= shape(C)
6 Mar 2009 sy_add_i(3PI)
