Math Vector Library
Programming Reference Manual Fortran
Version 1.0 DD-00002-110

10.2 vhypot - Vector euclidean distance √︁------
 x2 +y2

subroutine vhypot (n, z, incz, x, incx, y, incy);
subroutine vhypotf(n, z, incz, x, incx, y, incy);

Given input vectors x  and y  and a result vector z  , this function computes:

   √︃ ------
z =  x2+ y2

10.2.1 Parameters

N - INTEGER

ENTRY: Number of elements of x  , y  and z  .
CONSTRAINT: n ≥1  .

Z - ARRAY OF REAL

EXIT: Result vector z  .
CONSTRAINT: Must contain n× incz  elements.
CONSTRAINT: Must not overlap with array x  or y  .

INCZ - INTEGER

ENTRY: Stride for the vector z  .
CONSTRAINT: incz> 0  .

X - ARRAY OF REAL

ENTRY: Input vector x  .
CONSTRAINT: Must contain n× incx  elements.
CONSTRAINT: Must not overlap with array z  or y  .

INCX - INTEGER

ENTRY: Stride for the vector x  .
CONSTRAINT: incx> 0  .

Y - ARRAY OF REAL

ENTRY: Input vector y  .
CONSTRAINT: Must contain n× incy  elements.
CONSTRAINT: Must not overlap with array z  or x  .

INCY - INTEGER

ENTRY: Stride for the vector y  .
CONSTRAINT: incy> 0  .