AT&T UNIX™PC Unix System V Users Manual - tenox

AT&T UNIX™PC Unix System V Users Manual - tenox AT&T UNIX™PC Unix System V Users Manual - tenox

01.01.2013 Views

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ERF (3M) ERF (3M) NAME erf1 erfc - error function and complementary error function SYNOPSIS #include double err (x) double x; double erfc (x) double x; DESCRIPTION :r Erf returns the error function of x 1 defined as � J e -t2 dt. vrr o Erfc 1 which returns 1.0 - erf{ x) 1 is provided because of the extreme loss of relative accuracy if erf{x) is called for large x and the result subtracted from 1.0 (e.g. for x = 51 12 places are lost). SEE ALSO exp(3M). - 1 -

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