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floor, ceiling, etc on exacts [1.6]

From: Kevin Ryde
Subject: floor, ceiling, etc on exacts [1.6]
Date: Sat, 24 Apr 2004 07:11:13 +1000
User-agent: Gnus/5.110002 (No Gnus v0.2) Emacs/21.3 (gnu/linux)

        * numbers.c (scm_floor, scm_ceiling, scm_truncate_number,
        scm_round_number): New functions, replacing scm_tc7_cxr definitions,
        and ensuring exact arguments give exact results, as required by R5RS.
        Derived in part from the same by Marius in the cvs head.  Reported by
        Ray Lehtiniemi.

        * tests/numbers.test (truncate, round, floor, ceiling): Add tests, in
        particular exercising exactness fixes and scm_round 2^53-1 fix.

These bits and pieces of tests will be for the cvs head too, though
the 2^53-1 part is still broken there at the moment (scm_round_number
is afflicted by the same problem as scm_round was).

Attachment: numbers.c.floor-exact.diff
Description: Text document

Attachment: numbers.test.floor-exact.diff
Description: Text document

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