Lines Matching full:2
41 * log(1+x) = x - 0.5 x**2 + x**3 P(x)/Q(x).
43 * Otherwise, setting z = 2(x-1)/x+1),
68 /* Coefficients for log(1+x) = x - x**2/2 + x**3 P(x)/Q(x)
69 * 1/sqrt(2) <= x < sqrt(2)
91 /* Coefficients for log(x) = z + z^3 P(z^2)/Q(z^2),
92 * where z = 2(x-1)/(x+1)
93 * 1/sqrt(2) <= x < sqrt(2)
141 * where z = 2(x-1)/x+1) in logl()
143 if( (e > 2) || (e < -2) ) in logl()
146 { /* 2( 2x-1 )/( 2x+1 ) */ in logl()
152 { /* 2 (x-1)/(x+1) */ in logl()
167 /* logarithm using log(1+x) = x - .5x**2 + x**3 P(x)/Q(x) */ in logl()
172 x = ldexpl( x, 1 ) - 1.0L; /* 2x - 1 */ in logl()
186 z = z + e * C1; /* This sum has an error of 1/2 lsb. */ in logl()