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  /external/fdlibm/
s_tanh.c 20 * 0. ieee_tanh(x) is defined to be -----------
23 * 1. reduce x to non-negative by ieee_tanh(-x) = -ieee_tanh(x).
24 * 2. 0 <= x <= 2**-55 : ieee_tanh(x) := x*(one+x)
26 * 2**-55 < x <= 1 : ieee_tanh(x) := -----; t = ieee_expm1(-2x)
29 * 1 <= x <= 22.0 : ieee_tanh(x) := 1- ----- ; t=ieee_expm1(2x)
31 * 22.0 < x <= INF : ieee_tanh(x) := 1.
35 * only ieee_tanh(0)=0 is exact for finite argument.
47 double ieee_tanh(double x) function
49 double ieee_tanh(x
    [all...]
fdlibm.h 112 extern double ieee_tanh __P((double));
  /libcore/luni/src/main/native/
java_lang_StrictMath.cpp 90 return ieee_tanh(a);

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