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/external/fdlibm/
H A Ds_log1p.c14 /* double ieee_log1p(double x)
28 * 2. Approximation of ieee_log1p(f).
48 * 3. Finally, ieee_log1p(x) = k*ln2 + ieee_log1p(f).
56 * log1p(+INF) is +INF; ieee_log1p(-1) is -INF with signal;
70 * algorithm can be used to compute ieee_log1p(x) to within a few ULP:
100 double ieee_log1p(double x) function
102 double ieee_log1p(x)
115 if(x==-1.0) return -two54/zero; /* ieee_log1p(-1)=+inf */
116 else return (x-x)/(x-x); /* ieee_log1p(
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