Removed confusing text which implies that gamma() computes the gamma
instead of log gamma function. This was true with 4.4BSD's libm, but they are equivalent on all other systems (XPG4.2 requires this).
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@ -30,7 +30,7 @@
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.\" SUCH DAMAGE.
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.\"
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.\" from: @(#)lgamma.3 6.6 (Berkeley) 12/3/92
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.\" $Id: lgamma.3,v 1.8 1996/03/30 01:34:05 jtc Exp $
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.\" $Id: lgamma.3,v 1.9 1997/07/25 20:41:18 jtc Exp $
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.\"
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.Dd December 3, 1992
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.Dt LGAMMA 3
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@ -77,18 +77,9 @@ Only after
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.Fn lgamma
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has returned can signgam be correct.
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.Pp
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For arguments in its range,
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.Fn gamma
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is preferred, as for positive arguments
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it is accurate to within one unit in the last place.
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Exponentiation of
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.Fn lgamma
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will lose up to 10 significant bits.
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.Sh RETURN VALUES
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.Fn Gamma
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and
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.Fn lgamma
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return appropriate values unless an argument is out of range.
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.Fn Lgamma
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returns appropriate values unless an argument is out of range.
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Overflow will occur for sufficiently large positive values, and
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non-positive integers.
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On the
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@ -97,10 +88,7 @@ the reserved operator is returned,
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and
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.Va errno
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is set to
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.Er ERANGE
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For large non-integer negative values,
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.Fn gamma
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will underflow.
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.Er ERANGE .
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.Sh SEE ALSO
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.Xr math 3
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.Sh HISTORY
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