Lines Matching defs:pi
42 hln2pi = 0.9189385332046727417803297, /* log(2*pi)/2 */
43 pi = 3.1415926535897932384626434,
120 * Return sin(pi*x). We assume x is finite and negative, and if it
130 return (__k_sin(pi * x, 0.0));
145 y = __k_sin(pi * y, 0.0);
149 y = __k_cos(pi * (0.5 - y), 0.0);
153 y = __k_sin(pi * (1.0 - y), 0.0);
157 y = -__k_cos(pi * (y - 1.5), 0.0);
160 y = __k_sin(pi * (y - 2.0), 0.0);
174 * -z*G(-z)*G(z) = pi/sin(pi*z),
176 * G(-z) = -pi/(sin(pi*z)*G(z)*z)
177 * = pi/(sin(pi*(-z))*G(z)*z)
188 * return log(pi/(t*z))-__k_lgamma(z, signgamp);
191 t = sin_pi(z); /* t := sin(pi*z) */
199 p = log(pi / (fabs(t) * z)) - __k_lgamma(z, signgamp);