Lines Matching defs:tanh
30 #pragma weak __tanh = tanh
40 * 1. reduce x to non-negative by tanh(-x) = - tanh(x).
42 * 0 < x <= 1.e-10 : tanh(x) := x
44 * 1.e-10 < x <= 1 : tanh(x) := --------------
47 * 1 <= x <= 22.0 : tanh(x) := 1 - ---------------
49 * 22.0 < x <= INF : tanh(x) := 1.
54 * tanh(NaN) is NaN;
55 * only tanh(0)=0 is exact for finite argument.
70 tanh(double x) {