1 struct ieee754_double {
4 extern const float __exp_deltatable[178];
5 float __ieee754_expf (float x)
7 static const float himark = 88.72283935546875;
8 static const float lomark = -103.972084045410;
9 if (__builtin_isless(x, himark) && __builtin_isgreater(x, lomark))
12 double x22, t, result, dx;
14 struct ieee754_double ex2_u;
16 tval = (int) (t * 512.0);
18 delta = - __exp_deltatable[tval];
20 delta = __exp_deltatable[-tval];
21 x22 = (0.5000000496709180453 * dx + 1.0000001192102037084) * dx + delta;
22 result = x22 * ex2_u.d + ex2_u.d;
23 return (float) result;