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- *DECK CACOS
- COMPLEX FUNCTION CACOS (Z)
- C***BEGIN PROLOGUE CACOS
- C***PURPOSE Compute the complex arc cosine.
- C***LIBRARY SLATEC (FNLIB)
- C***CATEGORY C4A
- C***TYPE COMPLEX (CACOS-C)
- C***KEYWORDS ARC COSINE, ELEMENTARY FUNCTIONS, FNLIB, TRIGONOMETRIC
- C***AUTHOR Fullerton, W., (LANL)
- C***DESCRIPTION
- C
- C CACOS(Z) calculates the complex trigonometric arc cosine of Z.
- C The result is in units of radians, and the real part is in the
- C first or second quadrant.
- C
- C***REFERENCES (NONE)
- C***ROUTINES CALLED CASIN
- C***REVISION HISTORY (YYMMDD)
- C 770401 DATE WRITTEN
- C 861211 REVISION DATE from Version 3.2
- C 891214 Prologue converted to Version 4.0 format. (BAB)
- C***END PROLOGUE CACOS
- COMPLEX Z, CASIN
- SAVE PI2
- DATA PI2 /1.5707963267 9489661923E0/
- C***FIRST EXECUTABLE STATEMENT CACOS
- CACOS = PI2 - CASIN (Z)
- C
- RETURN
- END
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