Definition at line 160 of file r250.py. 00160 : 00161 "return a series of 52-bit significance double-precision randoms on [0,1)." 00162 q1 = self.fast_random_series(2*count) #take bits from the random pool 00163 q1[1::2] &= self.mask32#mask off low bits to prevent rounding when combined to 52-bit mantissas 00164 q1=q1*self.single_floatscale #convert results to doubles scaled on [0,1) 00165 #now, for any generator with two-point correlations, or unknown bit lengths, this would fail horribly, but this class is safe. 00166 q1[1::2]*=self.single_floatscale #rescale LSBs 00167 q1[0::2]+=q1[1::2] #and combine with MSBs 00168 return q1[::2] 00169 class r250(ran_shift):
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1.5.4