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

866 HP MLIB User’s Guide

vssincos, vdsincos Both sine and cosine of the elements of a vector

Name vssincos, vdsincos

Both sine and cosine of the elements of a vector

Purpose vssincos and vdsincos calculate both the sine and cosine of vector elements:

s(i) = sin(a(i)) and

c(i) = cos(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 vssincos(n, a, s, c)

INTEGER, INTENT(IN) :: n

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

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

SUBROUTINE vdsincos(n, a, s, c)

INTEGER, INTENT(IN) :: n

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

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

Input n Number of elements to be calculated.

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

Output s Array of length at least n, specifying the output vector

of sines.

c Array of length at least n, specifying the output vector

of cosines.