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Minor doc patch: arith.texi

Hi,

The attached patch fixes a slight inaccuracy in the documentation for
'frexp'.  The current documentation does not correctly describe the
behaviour when frexp is given a negative value.  E.g.,

    frexp(-11.875, &exponent)

returns -0.7421875, which is not "in the range 1/2 (inclusive) to 1
(exclusive)" as the info page says.  The patch inserts "its absolute
value".

Thanks,

Ben.

Attachment: arith.texi.patch
Description: Binary data

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