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- ERF Mathematical Library Procedures ERF
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- NNAAMMEE
- erf, erfc - error functions
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- SSYYNNOOPPSSIISS
- ##iinncclluuddee <<mmaatthh..hh>>
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- ddoouubbllee eerrff((xx))
- ddoouubbllee xx;;
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- ddoouubbllee eerrffcc((xx))
- ddoouubbllee xx;;
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- DDEESSCCRRIIPPTTIIOONN
- Erf(x) returns the error function of x; where
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- erf(x) = 2/sqrt(pi)*integral from 0 to x of exp(-t*t) dt.
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- Erfc(x) returns 1.0-erf(x).
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- The entry for erfc is provided because of the extreme loss
- of relative accuracy if erf(x) is called for large x and the
- result subtracted from 1. (e.g. for x = 10, 12 places are
- lost).
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- SSEEEE AALLSSOO
- math(3M)
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- Sprite v1.0 May 12, 1986 1
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