HP MLIB User's Guide Vol. 1 7th Ed.

154 HP MLIB User’s Guide
F_SAMAX_VAL/F_DAMAX_VAL/F_CAMAX_VAL/F_ZAMAX_VAL Maximum absolute value and location
INTEGER*8 INCX, K, N
REAL*8 R
COMPLEX*16 X( * )
SUBROUTINE F_ZAMAX_VAL (N, X, INCX, K, R)
Input N Number of elements of vector x.
X REAL or COMPLEX array, minimum length
(N - 1) x |incx| + 1.
INCX Increment for the array x. A vector x having component
x
i
, i = 1,..., n, is stored in an array X() with increment
argument incx. If incx > 0 then x
i
is stored in
X (1 + (i - 1) x incx). If incx < 0 then x
i
is stored in
X (1 + (N - i) x |incx|). incx = 0 is an illegal value.
Output K Displacement returned by the routine. The smallest
offset or index such that
R REAL scalar. The largest component of the vector x.
x
k
max Re x
i
() Im x
i
()+()where 0 in<≤()=