# dcosdg.f

          DOUBLE PRECISION FUNCTION DCOSDG (X)
    C***BEGIN PROLOGUE  DCOSDG
    C***PURPOSE  Compute the cosine of an argument in degrees.
    C***LIBRARY   SLATEC (FNLIB)
    C***CATEGORY  C4A
    C***TYPE      DOUBLE PRECISION (COSDG-S, DCOSDG-D)
    C***KEYWORDS  COSINE, DEGREES, ELEMENTARY FUNCTIONS, FNLIB,
    C             TRIGONOMETRIC
    C***AUTHOR  Fullerton, W., (LANL)
    C***DESCRIPTION
    C
    C DCOSDG(X) calculates the double precision trigonometric cosine
    C for double precision argument X in units of degrees.
    C
    C***REFERENCES  (NONE)
    C***ROUTINES CALLED  (NONE)
    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  DCOSDG