Searched defs:erf (Results 1 - 2 of 2) sorted by relevance

/bionic/libm/upstream-freebsd/lib/msun/src/
H A Dimprecise.c65 DECLARE_IMPRECISE(erf); variable
H A Ds_erf.c16 /* double erf(double x)
20 * erf(x) = --------- | exp(-t*t)dt
24 * erfc(x) = 1-erf(x)
26 * erf(-x) = -erf(x)
31 * erf(x) = x + x*R(x^2)
32 * erfc(x) = 1 - erf(x) if x in [-.84375,0.25]
37 * | R - (erf(x)-x)/x | <= 2
41 * erf(x) = (2/sqrt(pi))*(x - x^3/3 + x^5/10 - x^7/42 + ....)
45 * point of erf(
190 erf(double x) function
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