HP MLIB User's Guide Vol. 2 7th Ed.

854 HP MLIB User’s Guide

vsexp, vdexp The base-e exponential of the elements of a vector

Name vsexp, vdexp

The base-e exponential of the elements of a vector

Purpose vsexp and vdexp calculate the base-e exponential function of vector elements:

y(i) = exp(a(i)), for 1 <= i <= n

Usage The Fortran include ﬁle math.ﬁ declares interfaces for these subroutines,

suitable for both VMATH and VMATH8. The interfaces are compatible with

Intel’s MKL VML (Vector Math Library).

SUBROUTINE vsexp(n, a, y)

INTEGER, INTENT(IN) :: n

REAL (KIND=4), DIMENSION(n), INTENT(IN) :: a

REAL (KIND=4), DIMENSION(n), INTENT(OUT):: y

SUBROUTINE vdexp(n, a, y)

INTEGER, INTENT(IN) :: n

REAL (KIND=8), DIMENSION(n), INTENT(IN) :: a

REAL (KIND=8), DIMENSION(n), INTENT(OUT):: y

Input n Number of elements to be calculated.

a Array of length at least n, specifying the input vector.

Output y Array of length at least n specifying the output vector.