Lines Matching defs:log1p
29 #pragma weak __log1p = log1p
45 * 2. Approximation of log1p(f).
63 * log1p(f) = f - (hfsq - s*(hfsq+R)).
65 * 3. Finally, log1p(x) = k*ln2 + log1p(f).
72 * log1p(x) is NaN with signal if x < -1 (including -INF) ;
73 * log1p(+INF) is +INF; log1p(-1) is -INF with signal;
74 * log1p(NaN) is that NaN with no signal.
87 * algorithm can be used to compute log1p(x) to within a few ULP:
125 log1p(double x) {