| <Syntax> |
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ERF ( X )
X : Real;
Result : Same type and kind as X.
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| <Semantics> |
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The value of the result is an approximation to the “error function” of X; that is 2/SQRT(π) times the integral from 0 to X of e−t**2dt.
Like many intrinsic functions, this is elemental; the result has the same shape as X, with the operation being applied elementwise.
This function converges to 1.0 extremely rapidly with increasing X.
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| <Related> |
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ERFC intrinsic function,
ERFC_SCALED intrinsic function.
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