SLATEC Routines --- COT ---

*DECK COT
      FUNCTION COT (X)
C***BEGIN PROLOGUE  COT
C***PURPOSE  Compute the cotangent.
C***LIBRARY   SLATEC (FNLIB)
C***CATEGORY  C4A
C***TYPE      SINGLE PRECISION (COT-S, DCOT-D, CCOT-C)
C***KEYWORDS  COTANGENT, ELEMENTARY FUNCTIONS, FNLIB, TRIGONOMETRIC
C***AUTHOR  Fullerton, W., (LANL)
C***DESCRIPTION
C
C COT(X) calculates the cotangent of the real argument X.  X is in
C units of radians.
C
C Series for COT        on the interval  0.          to  6.25000D-02
C                                        with weighted error   3.76E-17
C                                         log weighted error  16.42
C                               significant figures required  15.51
C                                    decimal places required  16.88
C
C***REFERENCES  (NONE)
C***ROUTINES CALLED  CSEVL, INITS, R1MACH, XERMSG
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   900315  CALLs to XERROR changed to CALLs to XERMSG.  (THJ)
C   920618  Removed space from variable names.  (RWC, WRB)
C***END PROLOGUE  COT