cshch.f
36 lines
| 938 B
| text/x-fortran
|
FortranFixedLexer
| r1601 | *DECK CSHCH | |||
| SUBROUTINE CSHCH (Z, CSH, CCH) | ||||
| C***BEGIN PROLOGUE CSHCH | ||||
| C***SUBSIDIARY | ||||
| C***PURPOSE Subsidiary to CBESH and CBESK | ||||
| C***LIBRARY SLATEC | ||||
| C***TYPE ALL (CSHCH-A, ZSHCH-A) | ||||
| C***AUTHOR Amos, D. E., (SNL) | ||||
| C***DESCRIPTION | ||||
| C | ||||
| C CSHCH COMPUTES THE COMPLEX HYPERBOLIC FUNCTIONS CSH=SINH(X+I*Y) | ||||
| C AND CCH=COSH(X+I*Y), WHERE I**2=-1. | ||||
| C | ||||
| C***SEE ALSO CBESH, CBESK | ||||
| C***ROUTINES CALLED (NONE) | ||||
| C***REVISION HISTORY (YYMMDD) | ||||
| C 830501 DATE WRITTEN | ||||
| C 910415 Prologue converted to Version 4.0 format. (BAB) | ||||
| C***END PROLOGUE CSHCH | ||||
| COMPLEX CCH, CSH, Z | ||||
| REAL CCHI, CCHR, CH, CN, CSHI, CSHR, SH, SN, X, Y | ||||
| C***FIRST EXECUTABLE STATEMENT CSHCH | ||||
| X = REAL(Z) | ||||
| Y = AIMAG(Z) | ||||
| SH = SINH(X) | ||||
| CH = COSH(X) | ||||
| SN = SIN(Y) | ||||
| CN = COS(Y) | ||||
| CSHR = SH*CN | ||||
| CSHI = CH*SN | ||||
| CSH = CMPLX(CSHR,CSHI) | ||||
| CCHR = CH*CN | ||||
| CCHI = SH*SN | ||||
| CCH = CMPLX(CCHR,CCHI) | ||||
| RETURN | ||||
| END | ||||
