5 * Revision 1.1.1.1 1996/04/01 15:01:53 mclareni
10 FUNCTION NZERFZ(F,ZP,N)
12 #include "gen/impc64.inc"
15 PARAMETER(NAME='NZERFZ')
16 #include "gen/def64.inc"
17 + W,X,R,EPS,CST,CONST,R1,HF
18 DIMENSION ZP(*),W(12),X(12)
20 PARAMETER (PI = 3.14159 26535 89793 24D0)
21 #if defined(CERNLIB_CRAY)
22 PARAMETER (I = (0E0,1E0))
24 #if !defined(CERNLIB_CRAY)
25 PARAMETER (I = (0D0,1D0))
27 PARAMETER ( CPI2 = 2*PI*I)
28 PARAMETER (R1 = 1, HF = R1/2, DZ = (1+I)*1D-8)
29 PARAMETER (EPS = 1D-4, CST = 0.005D0, NFMAX = 200000)
31 DATA X( 1) /9.6028985649753623D-1/, W( 1) /1.0122853629037626D-1/
32 DATA X( 2) /7.9666647741362674D-1/, W( 2) /2.2238103445337447D-1/
33 DATA X( 3) /5.2553240991632899D-1/, W( 3) /3.1370664587788729D-1/
34 DATA X( 4) /1.8343464249564980D-1/, W( 4) /3.6268378337836198D-1/
35 DATA X( 5) /9.8940093499164993D-1/, W( 5) /2.7152459411754095D-2/
36 DATA X( 6) /9.4457502307323258D-1/, W( 6) /6.2253523938647893D-2/
37 DATA X( 7) /8.6563120238783174D-1/, W( 7) /9.5158511682492785D-2/
38 DATA X( 8) /7.5540440835500303D-1/, W( 8) /1.2462897125553387D-1/
39 DATA X( 9) /6.1787624440264375D-1/, W( 9) /1.4959598881657673D-1/
40 DATA X(10) /4.5801677765722739D-1/, W(10) /1.6915651939500254D-1/
41 DATA X(11) /2.8160355077925891D-1/, W(11) /1.8260341504492359D-1/
42 DATA X(12) /9.5012509837637440D-2/, W(12) /1.8945061045506850D-1/
67 3 S8=S8+W(K)*(((FPP-FPM)/DZ)/(FPP+FPM)+((FMP-FMM)/DZ)/(FMP+FMM))
75 4 S16=S16+W(K)*(((FPP-FPM)/DZ)/(FPP+FPM)+((FMP-FMM)/DZ)/(FMP+FMM))
78 IF(ABS(S16-C2*S8) .LE. EPS*(1+ABS(S16))) THEN
83 IF(1+CONST*ABS(C2) .NE. 1 .AND. NF .LE. NFMAX) GO TO 2
85 CALL MTLPRT(NAME,'C210.1','PROBLEMS WITH INTEGRATION,'//
86 + 'POLYGON TOO NEAR TO A ZERO OR SINGULARITY ?')
91 99 NZERFZ=NINT(ABS(R))