Lines Matching refs:erfc
73 // Coefficients for approximation to erfc in [1.251/0.35]
92 // Coefficients for approximation to erfc in [1/.3528]
187 * double erfc(double x)
194 * erfc(x) = 1-erf(x)
197 * erfc(-x) = 2 - erfc(x)
202 * erfc(x) = 1 - erf(x) if x in [-.84375,0.25]
222 * erfc(x) = (1-c) - P1(s)/Q1(s) if x > 0
236 * erfc(x) = (1/x)*exp(-x*x-0.5625+R1/S1)
237 * erf(x) = 1 - erfc(x)
243 * erfc(x) = (1/x)*exp(-x*x-0.5625+R2/S2) if x > 0
246 * erf(x) = sign(x)*(1.0 - erfc(x)) if x < 6, else
261 * erfc(x) ~ ---------- * ( 1 + Poly(1/x^2) )
264 * g(s)=f(1/x^2) = log(erfc(x)*x) - x*x + 0.5625
271 * erfc(x) = tiny*tiny (raise underflow) if x > 0
276 * erfc(0) = 1, erfc(inf) = 0, erfc(-inf) = 2,
277 * erfc/erf(NaN) is NaN