NAME

zrotg - Construct a Given’s plane rotation

SYNOPSIS

SUBROUTINE ZROTG (A, B, C, S)

COMPLEX∗16    A, B, S DOUBLE PRECISION       C

#include <sunperf.h>

void zrotg(doublecomplex ∗ca, doublecomplex ∗cb, double ∗ c, doublecomplex ∗s) ;

PURPOSE

ZROTG - Construct a Given’s plane rotation that will annihilate an element of a vector. 
 

PARAMETERS

A - COMPLEX∗16. 
On entry, A contains the entry in the first vector that corresponds to the element to be annihilated in the second vector. Unchanged on exit.

B - COMPLEX∗16. 
On entry, B contains the entry to be annihilated in the second vector.

C - DOUBLE PRECISION. 
On exit, C and S are the elements of the rotation matrix that will be applied to annihilate B.

S - COMPLEX∗16. 
On exit, C and S are the elements of the rotation matrix that will be applied to annihilate B.

SunOS 5.0  —  Last change: 10 Dec 1998