Mercurial > octave
view libcruft/amos/zdiv.f @ 4822:d0aa1a59b73b ss-2-1-56
[project @ 2004-03-05 19:15:30 by jwe]
author | jwe |
---|---|
date | Fri, 05 Mar 2004 19:15:30 +0000 |
parents | 8b0cb8f79fdc |
children |
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SUBROUTINE ZDIV(AR, AI, BR, BI, CR, CI) C***BEGIN PROLOGUE ZDIV C***REFER TO ZBESH,ZBESI,ZBESJ,ZBESK,ZBESY,ZAIRY,ZBIRY C C DOUBLE PRECISION COMPLEX DIVIDE C=A/B. C C***ROUTINES CALLED XZABS C***END PROLOGUE ZDIV DOUBLE PRECISION AR, AI, BR, BI, CR, CI, BM, CA, CB, CC, CD DOUBLE PRECISION XZABS BM = 1.0D0/XZABS(BR,BI) CC = BR*BM CD = BI*BM CA = (AR*CC+AI*CD)*BM CB = (AI*CC-AR*CD)*BM CR = CA CI = CB RETURN END