*DECK CDQAWS SUBROUTINE CDQAWS (LUN, KPRINT, IPASS) C***BEGIN PROLOGUE CDQAWS C***PURPOSE Quick check for DQAWS. C***LIBRARY SLATEC C***TYPE DOUBLE PRECISION (CQAWS-S, CDQAWS-D) C***AUTHOR (UNKNOWN) C***ROUTINES CALLED D1MACH, DF0WS, DF1WS, DPRIN, DQAWS C***REVISION HISTORY (YYMMDD) C ?????? DATE WRITTEN C 891214 Prologue converted to Version 4.0 format. (BAB) C 901205 Added PASS/FAIL message and changed the name of the first C argument. (RWC) C 910501 Added PURPOSE and TYPE records. (WRB) C***END PROLOGUE CDQAWS C C FOR FURTHER DOCUMENTATION SEE ROUTINE CQPDOC C DOUBLE PRECISION A,ABSERR,B,D1MACH,EPMACH,EPSABS, * EPSREL,ERROR,EXACT0,EXACT1,DF0WS,DF1WS,ALFA,BETA, * RESULT,UFLOW,WORK INTEGER IER,IP,IPASS,IWORK,KPRINT,LAST,LENW,LIMIT,NEVAL,INTEGR DIMENSION WORK(800),IWORK(200),IERV(2) EXTERNAL DF0WS,DF1WS DATA EXACT0/0.5350190569223644D+00/ DATA EXACT1/0.1998491554328673D+04/ C***FIRST EXECUTABLE STATEMENT CDQAWS IF (KPRINT.GE.2) WRITE (LUN, '(''1DQAWS QUICK CHECK''/)') C C TEST ON IER = 0 C IPASS = 1 ALFA = -0.5D+00 BETA = -0.5D+00 INTEGR = 1 A = 0.0D+00 B = 0.1D+01 LIMIT = 200 LENW = LIMIT*4 EPSABS = 0.0D+00 EPMACH = D1MACH(4) EPSREL = MAX(SQRT(EPMACH),0.1D-07) CALL DQAWS(DF0WS,A,B,ALFA,BETA,INTEGR,EPSABS,EPSREL,RESULT,ABSERR, * NEVAL,IER,LIMIT,LENW,LAST,IWORK,WORK) IERV(1) = IER IP = 0 ERROR = ABS(EXACT0-RESULT) IF(IER.EQ.0.AND.ERROR.LE.EPSREL*ABS(EXACT0)) * IP = 1 IF(IP.EQ.0) IPASS = 0 CALL DPRIN(LUN,0,KPRINT,IP,EXACT0,RESULT,ABSERR,NEVAL,IERV,1) C C TEST ON IER = 1 C CALL DQAWS(DF0WS,A,B,ALFA,BETA,INTEGR,EPSABS,EPSREL,RESULT,ABSERR, * NEVAL,IER,2,8,LAST,IWORK,WORK) IERV(1) = IER IP = 0 IF(IER.EQ.1) IP = 1 IF(IP.EQ.0) IPASS = 0 CALL DPRIN(LUN,1,KPRINT,IP,EXACT0,RESULT,ABSERR,NEVAL,IERV,1) C C TEST ON IER = 2 OR 1 C UFLOW = D1MACH(1) CALL DQAWS(DF0WS,A,B,ALFA,BETA,INTEGR,UFLOW,0.0D+00,RESULT,ABSERR, * NEVAL,IER,LIMIT,LENW,LAST,IWORK,WORK) IERV(1) = IER IERV(2) = 1 IP = 0 IF(IER.EQ.2.OR.IER.EQ.1) IP = 1 IF(IP.EQ.0) IPASS = 0 CALL DPRIN(LUN,2,KPRINT,IP,EXACT0,RESULT,ABSERR,NEVAL,IERV,2) C C TEST ON IER = 3 OR 1 C CALL DQAWS(DF1WS,A,B,ALFA,BETA,INTEGR,EPSABS,EPSREL,RESULT,ABSERR, * NEVAL,IER,LIMIT,LENW,LAST,IWORK,WORK) IERV(1) = IER IERV(2) = 1 IP = 0 IF(IER.EQ.3.OR.IER.EQ.1) IP = 1 IF(IP.EQ.0) IPASS = 0 CALL DPRIN(LUN,3,KPRINT,IP,EXACT1,RESULT,ABSERR,NEVAL,IERV,2) C C TEST ON IER = 6 C INTEGR = 0 CALL DQAWS(DF1WS,A,B,ALFA,BETA,INTEGR,EPSABS,EPSREL,RESULT,ABSERR, * NEVAL,IER,LIMIT,LENW,LAST,IWORK,WORK) IERV(1) = IER IP = 0 IF(IER.EQ.6) IP = 1 IF(IP.EQ.0) IPASS = 0 CALL DPRIN(LUN,6,KPRINT,IP,EXACT0,RESULT,ABSERR,NEVAL,IERV,1) C IF (KPRINT.GE.1) THEN IF (IPASS.EQ.0) THEN WRITE(LUN, '(/'' SOME TEST(S) IN CDQAWS FAILED''/)') ELSEIF (KPRINT.GE.2) THEN WRITE(LUN, '(/'' ALL TEST(S) IN CDQAWS PASSED''/)') ENDIF ENDIF RETURN END