.TH  DROTG 1 "November 2006" "BLAS routine" "BLAS routine" 
.SH NAME
DROTG - given plane rotation
.SH SYNOPSIS
.TP 28
SUBROUTINE DROTG(DA,DB,C,S)
.TP 28
.ti +4
DOUBLE
PRECISION C,DA,DB,S
.SH PURPOSE
   construct givens plane rotation.
   jack dongarra, linpack, 3/11/78.
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