# dcbrt.f

          DOUBLE PRECISION FUNCTION DCBRT (X)
    C***BEGIN PROLOGUE  DCBRT
    C***PURPOSE  Compute the cube root.
    C***LIBRARY   SLATEC (FNLIB)
    C***CATEGORY  C2
    C***TYPE      DOUBLE PRECISION (CBRT-S, DCBRT-D, CCBRT-C)
    C***KEYWORDS  CUBE ROOT, ELEMENTARY FUNCTIONS, FNLIB, ROOTS
    C***AUTHOR  Fullerton, W., (LANL)
    C***DESCRIPTION
    C
    C DCBRT(X) calculates the double precision cube root for
    C double precision argument X.
    C
    C***REFERENCES  (NONE)
    C***ROUTINES CALLED  D1MACH, D9PAK, D9UPAK
    C***REVISION HISTORY  (YYMMDD)
    C   770601  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  DCBRT