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29 lines
842 B
Fortran
29 lines
842 B
Fortran
*DECK CACOSH
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COMPLEX FUNCTION CACOSH (Z)
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C***BEGIN PROLOGUE CACOSH
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C***PURPOSE Compute the arc hyperbolic cosine.
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C***LIBRARY SLATEC (FNLIB)
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C***CATEGORY C4C
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C***TYPE COMPLEX (ACOSH-S, DACOSH-D, CACOSH-C)
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C***KEYWORDS ACOSH, ARC HYPERBOLIC COSINE, ELEMENTARY FUNCTIONS, FNLIB,
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C INVERSE HYPERBOLIC COSINE
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C***AUTHOR Fullerton, W., (LANL)
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C***DESCRIPTION
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C
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C CACOSH(Z) calculates the complex arc hyperbolic cosine of Z.
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C
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C***REFERENCES (NONE)
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C***ROUTINES CALLED CACOS
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C***REVISION HISTORY (YYMMDD)
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C 770401 DATE WRITTEN
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C 861211 REVISION DATE from Version 3.2
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C 891214 Prologue converted to Version 4.0 format. (BAB)
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C***END PROLOGUE CACOSH
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COMPLEX Z, CI, CACOS
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SAVE CI
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DATA CI /(0.,1.)/
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C***FIRST EXECUTABLE STATEMENT CACOSH
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CACOSH = CI*CACOS(Z)
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C
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RETURN
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END
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