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RANMAR (G. Marsaglia et al., 1987)
ri = mod [(ri-97- ri-33), 224]
ti-1- 7654321 if ti-1- 7654321 > 0
ti-1- 7654321 + 224 - 3 otherwise
xi = mod [(ri- ti), 224]
period = 2144 portable & recommended
possible to gen. independently disjoint sequences
ACARRY/RCARRY/RANLUX (Marsaglia et al., 1990)
Dn=xn-i-xn-j-cn-1 j >i ³1
xn=Dn cn = 0 if Dn³ 0
xn=Dn+b cn = 1 otherwise
e.g. j = 24, i=10, b=224 : RCARRY
fails gap test - Period »2568
Lüscher (1994) proposed to read j numbers and discard the following p-j with p=223 ® RANLUX