Error analysis of some system functions

This is the summary of the results run on Sun Sep 08 13:17:53 2002 on dioxide

Hardware, operating system and compiling command

SGI - Octane, Irix64, cc -O3 -lm
function tests max err in ulps argument (max err) value (max err)
Gamma15751455.50086164.0402796584392.4611985851116676e+291
INV6530.500000.999999999999999891.0000000000000002
Pix7200.50000-0.40249991160122217-1.2644907653569408
acos13080.994420.968912421710648950.24999999999998318
acosh10331.504821.26036200279998820.70680725893044993
asin13441.014670.841470984807895730.99999999999999845
asinh10421.254790.252612316808168260.24999999999999992
atan8701.02297-78661649112785.969-1.5707963267948837
atanh9931.501920.118152693200000370.11870715100681621
cos14188913667029669242.000001426668733016935.50
cosh13310.58635-102.986112949032692.6623832404843118e+44
erf12771.984870.11123545184094970.12499999999999974
erfc13188985476322025521.0000010.2580820608215840
exp13330.51222707.496368554382911.8271273971595468e+307
j01053316994596144809790.000005.52007811028631069.4929236644614263e-16
j11024500062037853668740.00000-7.0155866698156188-3.1101236429065784e-15
lgamma140825630604005512140.000001.99999999999999982.2204460492503128e-16
log11350.504570.8458718976000007-0.16738735211786759
log1012851.513320.99999996884714715-1.3529512300314523e-08
pow2_x14670.513017.7659010114999996217.65525035386418
powx_27510630.50626352.2174861799999210086256.564560123
sin12571.317544272942.9999999991-5.50510820385106e-07
sinh8951.524070.376358749799999840.38530683442647262
sqrt10550.500000.999999999999999890.99999999999999989
tan15968818762712042033.0000014266687330169350
tanh7921.112800.549306144334054780.49999999999999989
y09761215569141395856600.000007.0860510603017728-3.7192471324942744e-15
y1987nan0x10000000-2.2250738585072019e-308nan0x000000000010000000