Lines Matching refs:erfc
28 * double erfc(double x)
35 * erfc(x) = 1-erf(x)
38 * erfc(-x) = 2 - erfc(x)
43 * erfc(x) = 1 - erf(x) if x in [-.84375,0.25]
57 * erfc(x) = (1-c) - P1(s)/Q1(s) if x > 0
65 * erfc(x) = (1/x)*exp(-x*x-0.5625+R1(z)/S1(z))
67 * erf(x) = 1 - erfc(x)
70 * erfc(x) = (1/x)*exp(-x*x-0.5625+R2/S2) if x > 0
75 * erf(x) = sign(x)*(1.0 - erfc(x)) if x < 6.666, else
86 * erfc(x) ~ ---------- * ( 1 + Poly(1/x^2) )
91 * erfc(x) = tiny*tiny (raise underflow) if x > 0
96 * erfc(0) = 1, erfc(inf) = 0, erfc(-inf) = 2,
97 * erfc/erf(NaN) is NaN
110 return erfc(x);
167 * Coefficients for approximation to erfc in [1.25,1/0.35]
169 /* erfc(1/x) = x exp (-1/x^2 - 0.5625 + ra(x^2)/sa(x^2))
197 * Coefficients for approximation to erfc in [1/.35,107]
199 /* erfc(1/x) = x exp (-1/x^2 - 0.5625 + rb(x^2)/sb(x^2))
222 /* erfc(1/x) = x exp (-1/x^2 - 0.5625 + rc(x^2)/sc(x^2))
274 } else { /* 6.666 <= |x| < 107 (erfc only) */
323 /* erfc(nan) = nan, erfc(+-inf) = 0,2 */
351 return erfc(x);