58 lines
1.9 KiB
Plaintext
58 lines
1.9 KiB
Plaintext
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History of Major Changes to SoftFloat, up to Release 2b
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John R. Hauser
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2002 May 27
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Release 2b (2002 May)
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-- Made minor updates to the documentation, including improved wording of
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the legal restrictions on using SoftFloat.
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Release 2a (1998 December)
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-- Added functions to convert between 64-bit integers (int64) and all
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supported floating-point formats.
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-- Fixed a bug in all 64-bit-version square root functions except
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`float32_sqrt' that caused the result sometimes to be off by 1 unit in
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the last place (1 ulp) from what it should be. (Bug discovered by Paul
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Donahue.)
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-- Improved the makefiles.
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Release 2 (1997 June)
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-- Created the 64-bit (bits64) version, adding the floatx80 and float128
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formats.
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-- Changed the source directory structure, splitting the sources into a
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`bits32' and a `bits64' version. Renamed `environment.h' to `milieu.h'
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to avoid confusion with environment variables.
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-- Fixed a small error that caused `float64_round_to_int' often to round the
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wrong way in nearest/even mode when the operand was between 2^20 and 2^21
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and halfway between two integers.
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Release 1a (1996 July)
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-- Corrected a mistake that caused borderline underflow cases not to raise
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the underflow flag when they should have. (Problem reported by Doug
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Priest.)
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-- Added the `float_detect_tininess' variable to control whether tininess is
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detected before or after rounding.
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Release 1 (1996 July)
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-- Original release.
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