norm_i(3PI) Sun Interval Performance Library norm_i(3PI)NAMEnorm_i - Interval vector norms.
DESCRIPTION
R = NORM_I ( X, NORM )
The routine NORM_I computes the ONE_NORM, TWO_NORM or INFINITY_NORM of
an interval vector X depending on the value passed as the NORM operator
argument. The resulting scalar R is always interval. If N is equal to
zero, this routine returns immediately with the output scalar R set to
zero interval.
SYNOPSIS
INTERVAL FUNCTION NORM_I( X [, NORM] )
INTERVAL, INTENT(IN) :: X(:)
TYPE(blas_norm_type), INTENT(IN) , OPTIONAL:: NORM
where
X has shape (N).
ARGUMENTS
X (input)
Array of DIMENSION (N).
Unchanged on exit.
NORM(input)
Scalar element. On entry, should be equal to
blas_norm_type value, i.e. NORM should take one
of the following values:
blas_one_norm | blas_two_norm | blas_inf_norm
Default value: blas_one_norm
ERRORS
blas_error_alloc
X is unallocated array
blas_error_shape
X has unappropriate shape
blas_error_norm
Unappropriate NORM argument
6 Mar 2009 norm_i(3PI)
