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- *DECK CCBRT
- COMPLEX FUNCTION CCBRT (Z)
- C***BEGIN PROLOGUE CCBRT
- C***PURPOSE Compute the cube root.
- C***LIBRARY SLATEC (FNLIB)
- C***CATEGORY C2
- C***TYPE COMPLEX (CBRT-S, DCBRT-D, CCBRT-C)
- C***KEYWORDS CUBE ROOT, ELEMENTARY FUNCTIONS, FNLIB, ROOTS
- C***AUTHOR Fullerton, W., (LANL)
- C***DESCRIPTION
- C
- C CCBRT(Z) calculates the complex cube root of Z. The principal root
- C for which -PI .LT. arg(Z) .LE. +PI is returned.
- C
- C***REFERENCES (NONE)
- C***ROUTINES CALLED CARG, CBRT
- C***REVISION HISTORY (YYMMDD)
- C 770401 DATE WRITTEN
- C 890531 Changed all specific intrinsics to generic. (WRB)
- C 890531 REVISION DATE from Version 3.2
- C 891214 Prologue converted to Version 4.0 format. (BAB)
- C***END PROLOGUE CCBRT
- COMPLEX Z
- C***FIRST EXECUTABLE STATEMENT CCBRT
- THETA = CARG(Z) / 3.0
- R = CBRT (ABS(Z))
- C
- CCBRT = CMPLX (R*COS(THETA), R*SIN(THETA))
- C
- RETURN
- END
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