Mercurial > octave-nkf
view libcruft/amos/zshch.f @ 14101:ff5588774680 stable ss-3-5-91
snapshot 3.5.91
* configure.ac (AC_INIT): Version is now 3.5.91.
(OCTAVE_RELEASE_DATE): Now 2011-12-23.
author | John W. Eaton <jwe@octave.org> |
---|---|
date | Fri, 23 Dec 2011 19:24:41 -0500 |
parents | 8b0cb8f79fdc |
children |
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SUBROUTINE ZSHCH(ZR, ZI, CSHR, CSHI, CCHR, CCHI) C***BEGIN PROLOGUE ZSHCH C***REFER TO ZBESK,ZBESH C C ZSHCH COMPUTES THE COMPLEX HYPERBOLIC FUNCTIONS CSH=SINH(X+I*Y) C AND CCH=COSH(X+I*Y), WHERE I**2=-1. C C***ROUTINES CALLED (NONE) C***END PROLOGUE ZSHCH C DOUBLE PRECISION CCHI, CCHR, CH, CN, CSHI, CSHR, SH, SN, ZI, ZR, * DCOSH, DSINH SH = DSINH(ZR) CH = DCOSH(ZR) SN = DSIN(ZI) CN = DCOS(ZI) CSHR = SH*CN CSHI = CH*SN CCHR = CH*CN CCHI = SH*SN RETURN END