xpmu.f
SUBROUTINE XPMU (NU1, NU2, MU1, MU2, THETA, X, SX, ID, PQA, IPQA,
1 IERROR)
C***BEGIN PROLOGUE XPMU
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Warning: this routine is not intended to be user-callable.
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C***SUBSIDIARY
C***PURPOSE To compute the values of Legendre functions for XLEGF.
C Method: backward mu-wise recurrence for P(-MU,NU,X) for
C fixed nu to obtain P(-MU2,NU1,X), P(-(MU2-1),NU1,X), ...,
C P(-MU1,NU1,X) and store in ascending mu order.
C***LIBRARY SLATEC
C***CATEGORY C3A2, C9
C***TYPE SINGLE PRECISION (XPMU-S, DXPMU-D)
C***KEYWORDS LEGENDRE FUNCTIONS
C***AUTHOR Smith, John M., (NBS and George Mason University)
C***ROUTINES CALLED XADD, XADJ, XPQNU
C***REVISION HISTORY (YYMMDD)
C 820728 DATE WRITTEN
C 890126 Revised to meet SLATEC CML recommendations. (DWL and JMS)
C 901019 Revisions to prologue. (DWL and WRB)
C 901106 Changed all specific intrinsics to generic. (WRB)
C Corrected order of sections in prologue and added TYPE
C section. (WRB)
C 920127 Revised PURPOSE section of prologue. (DWL)
C***END PROLOGUE XPMU