float package problems

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Article #99875

#99875

From: macrakis
Date: Thu, 26 Apr 1990 15:27

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GNU Emacs 18.53.11 of Mon Jul 24 1989 on kodak (berkeley-unix)

The float.el package, although useful, should be used with care.  For
instance, I noticed in reading the code that it doesn't try to give
rounded answers.

It also has some pretty flagrant bugs.  For instance:

1.0 - 2.0e-7 -> 0.1

(float-to-string (f- (string-to-float "1.0") (string-to-float "2.0e-7")))
"0.1000000"	(bug in float-to-string)

v19 will apparently use hardware floating point, so there's not much
point in fixing float.el.  But I thought I'd report the problems for
the record.

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From: macrakis@ri.osf.fr
Newsgroups: gnu.emacs.bug
Subject: float package problems
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Date: 26 Apr 90 15:27:27 GMT
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