I am not sure what to think about assertion failures for gsll. Does this mean I should not use gsll? Point me in the direction of the right reading material or let me know. I am on Linux Mint 17 64bit. I ran the tests under Clozure version 1.10 64bit, using slime in gnu emacs 24.3.1. Here is what I got:
Unit Test Summary
 4007 assertions total
 3992 passed
 15 failed
 1 execution errors
 0 missing tests
 Failed Form: (MULTIPLEVALUELIST (PASCALPDF 5 0.4 12))
 Expected (0.0056984767089869) but saw (0.005698476708986905)

 Failed Form: (MULTIPLEVALUELIST (NEGATIVEBINOMIALPDF 5 0.4 12.0))
 Expected (0.0056984767089869) but saw (0.005698476708986905)

NEGATIVEBINOMIAL: 6 assertions passed, 2 failed.
 Failed Form: (MULTIPLEVALUELIST (NONLINEARLEASTSQUARESEXAMPLE 40 +LEVENBERGMARQUARDT+ NIL))
 Expected ((5.045357801443204 0.10404905892045835 1.0192487061031013))
 but saw ((5.04535778186662 0.10404905770554014 1.0192487099440282))

NONLINEARLEASTSQUARES: 0 assertions passed, 1 failed.
 Failed Form: (MULTIPLEVALUELIST (LET ((RNG (MAKERANDOMNUMBERGENERATOR +MT19937+ 0))) (LOOP FOR I FROM 0 TO 10 COLLECT (SAMPLE RNG :EXPONENTIAL :MU 10.0))))
 Expected ((0.0025828444588394794 18.145581427987647 12.636598054339759 0.5424387252062355 14.624994234158105 7.236607929535993 0.4345362449683603 2.95303920904529 6.161052939065796 3.011686333539114 2.7451079819355364))
 but saw ((82.61578216370394 1.77823538531874 3.3214653339021365 29.412645812312775 2.6351843583734817 6.635371453335953 31.57709150859036 13.637712930094189 7.766237034468241 13.468928238240315 14.268822088229632))

EXPONENTIAL: 11 assertions passed, 1 failed.
 Failed Form: (MULTIPLEVALUELIST (LET ((V1 (GRID:MAKEFOREIGNARRAY '(COMPLEX DOUBLEFLOAT) :DIMENSIONS '3))) (GRID:COPYTO (SETALL V1 #C(34.5 8.24)))))
 Expected (#(#C(34.5 8.24) #C(34.5 8.24) #C(34.5 8.24)))
 but saw (#(#C(6.93808738500125E310 6.93808738500125E310) #C(0.0 0.0) #C(2.2610866479751355E4 1.9369301518129228E4)))

 Failed Form: (MULTIPLEVALUELIST (LET ((V1 (GRID:MAKEFOREIGNARRAY '(COMPLEX SINGLEFLOAT) :DIMENSIONS '3))) (GRID:COPYTO (SETALL V1 #C(34.5S0 8.24S0)))))
 Expected (#(#C(34.5S0 8.24S0) #C(34.5S0 8.24S0) #C(34.5S0 8.24S0)))
 but saw (#(#C(9.860902S32 4.5816855S41) #C(9.860902S32 4.5816855S41) #C(0.0S0 0.0S0)))

VECTORSETALL: 10 assertions passed, 2 failed.
 Failed Form: (MULTIPLEVALUELIST (RANDOMWALKVEGASEXAMPLE))
 Expected (1.3931632739551914 1.4981164744582692E4)
 but saw (1.3931632739552706 1.498116474436285E4)

 Failed Form: (MULTIPLEVALUELIST (RANDOMWALKMISEREXAMPLE))
 Expected (1.3895297058825096 0.0050106269732269415)
 but saw (1.3895297058825093 0.005010626973226931)

 Failed Form: (MULTIPLEVALUELIST (RANDOMWALKPLAINEXAMPLE))
 Expected (1.4122087033540667 0.013435861456267064)
 but saw (1.4122087033540713 0.013435861456268945)

MONTECARLO: 0 assertions passed, 3 failed.
 Failed Form: (MULTIPLEVALUELIST (LET ((V1 (GRID:MAKEFOREIGNARRAY '(COMPLEX DOUBLEFLOAT) :INITIALCONTENTS '(#C(34.5 8.24) #C(3.29 8.93) #C(34.12 6.15) #C(49.27 13.49) #C(32.5 42.73) #C(17.24 43.31) #C(16.12 8.25) #C(21.44 49.08)))) (SCALAR #C(32.5 42.73))) (GRID:COPYTO (SCALE SCALAR V1))))
 Expected (#(#C(1473.3452 1206.385) #C(488.5039 149.64329999999998) #C(1371.6895 1258.0725999999997) #C(2177.7027 1666.8821) #C(769.6028999999996 2777.45) #C(2410.9363 670.9098000000001) #C(171.3775 956.9326) #C(2793.9883999999997 678.9687999999999)))
 but saw (#(#C(34.5 8.24) #C(3.29 8.93) #C(34.12 6.15) #C(49.27 13.49) #C(32.5 42.73) #C(17.24 43.31) #C(16.12 8.25) #C(21.44 49.08)))

 Failed Form: (MULTIPLEVALUELIST (LET ((V1 (GRID:MAKEFOREIGNARRAY '(COMPLEX SINGLEFLOAT) :INITIALCONTENTS '(#C(34.5S0 8.24S0) #C(3.29S0 8.93S0) #C(34.12S0 6.15S0) #C(49.27S0 13.49S0) #C(32.5S0 42.73S0) #C(17.24S0 43.31S0) #C(16.12S0 8.25S0) #C(21.44S0 49.08S0)))) (SCALAR #C(32.5S0 42.73S0))) (GRID:COPYTO (SCALE SCALAR V1))))
 Expected (#(#C(1473.3452S0 1206.385S0) #C(488.5039S0 149.64331S0) #C(1371.6895S0 1258.0725S0) #C(2177.7026S0 1666.8821S0) #C(769.6029S0 2777.45S0) #C(2410.9363S0 670.9099S0) #C(171.37753S0 956.9326S0) #C(2793.9885S0 678.9689S0)))
 but saw (#(#C(34.5S0 8.24S0) #C(3.29S0 8.93S0) #C(34.12S0 6.15S0) #C(49.27S0 13.49S0) #C(32.5S0 42.73S0) #C(17.24S0 43.31S0) #C(16.12S0 8.25S0) #C(21.44S0 49.08S0)))

SCALE: 4 assertions passed, 2 failed.
 Failed Form: (MULTIPLEVALUELIST (INTEGRATIONQAGIU (INTEGRATIONTESTF15 5.0) 0.0 0.0 1.0E7 1000))
 Expected (65536.00000000025 7.121667184124547E4)
 but saw (65536.00000000025 7.121667220555405E4)

NUMERICALINTEGRATION: 41 assertions passed, 1 failed.
 Failed Form: (MULTIPLEVALUELIST (LET ((M1 (GRID:MAKEFOREIGNARRAY '(COMPLEX DOUBLEFLOAT) :DIMENSIONS '(3 3)))) (GRID:COPYTO (SETALL M1 #C(34.5 8.24)))))
 Expected (#2A((#C(34.5 8.24) #C(34.5 8.24) #C(34.5 8.24)) (#C(34.5 8.24) #C(34.5 8.24) #C(34.5 8.24)) (#C(34.5 8.24) #C(34.5 8.24) #C(34.5 8.24))))
 but saw (#2A((#C(6.93808738500125E310 6.93808738500125E310) #C(0.0 0.0) #C(0.0 0.0)) (#C(0.0 0.0) #C(0.0 0.0) #C(0.0 0.0)) (#C(0.0 0.0) #C(0.0 0.0) #C(0.0 0.0))))

 Failed Form: (MULTIPLEVALUELIST (LET ((M1 (GRID:MAKEFOREIGNARRAY '(COMPLEX SINGLEFLOAT) :DIMENSIONS '(3 3)))) (GRID:COPYTO (SETALL M1 #C(34.5S0 8.24S0)))))
 Expected (#2A((#C(34.5S0 8.24S0) #C(34.5S0 8.24S0) #C(34.5S0 8.24S0)) (#C(34.5S0 8.24S0) #C(34.5S0 8.24S0) #C(34.5S0 8.24S0)) (#C(34.5S0 8.24S0) #C(34.5S0 8.24S0) #C(34.5S0 8.24S0))))
 but saw (#2A((#C(0.0S0 0.0S0) #C(1.9980458S+7 2.2836375S0) #C(0.24403502S0 1.7918347S0)) (#C(54862.137S0 2.2802413S0) #C(2.8170395S11 2.6114688S0) #C(1.8720056S+36 2.430557S0)) (#C(60954.11S0 2.0077076S0) #C(5.3453843S19 2.1910214S0) #C(5.721449S+18 1.6339746S0))))

MATRIXSETALL: 10 assertions passed, 2 failed.
 Failed Form: (MULTIPLEVALUELIST (COUPLING3J 0 1 1 0 1 1))
 Expected (0.7071067811865475 3.14018491736755E16)
 but saw (0.7071067811865476 7.850462293418876E16)

COUPLING: 2 assertions passed, 1 failed.