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diff --git a/doc/SoftFloat-history.html b/doc/SoftFloat-history.html new file mode 100644 index 0000000..b78f658 --- /dev/null +++ b/doc/SoftFloat-history.html @@ -0,0 +1,143 @@ + +<HTML> + +<HEAD> +<TITLE>Berkeley SoftFloat History</TITLE> +</HEAD> + +<BODY> + +<H1>History of Berkeley SoftFloat, to Release 3</H1> + +<P> +John R. Hauser<BR> +2014 _____<BR> +</P> + +<P> +*** CONTENT DONE. +</P> + + +<H3>Release 3 (2014 December)</H3> + +<UL> + +<LI> +Complete rewrite, funded by the University of California, Berkeley. +Major changes included renaming most types and functions, upgrading some +algorithms, restructuring the source files, and making SoftFloat into a true +library. + +<LI> +Added functions to convert between floating-point and unsigned integers, both +<NOBR>32-bit</NOBR> and <NOBR>64-bit</NOBR> (<CODE>uint32_t</CODE> and +<CODE>uint64_t</CODE>). + +<LI> +Added functions for fused multiply-add, for all supported floating-point +formats except <NOBR>80-bit</NOBR> double-extended-precision. + +<LI> +Added support for a fifth rounding mode, <CODE>near_maxMag</CODE> (round to +nearest, with ties to maximum magnitude, away from zero). + +<LI> +Dropped the <CODE>timesoftfloat</CODE> program (now part of the Berkeley +TestFloat package). + +</UL> + + +<H3>Release 2c (2014 December)</H3> + +<UL> + +<LI> +Further improved wording for the legal restrictions on using SoftFloat releases +<NOBR>through 2c</NOBR>. + +</UL> + + +<H3>Release 2b (2002 May)</H3> + +<UL> + +<LI> +Made minor updates to the documentation, including improved wording for the +legal restrictions on using SoftFloat. + +</UL> + + +<H3>Release 2a (1998 December)</H3> + +<UL> + +<LI> +Added functions to convert between <NOBR>64-bit</NOBR> integers +(<CODE>int64</CODE>) and all supported floating-point formats. + +<LI> +Fixed a bug in all <NOBR>64-bit</NOBR>-version square root functions except +<CODE>float32_sqrt</CODE> that caused the result sometimes to be off by +<NOBR>1 unit</NOBR> in the last place (<NOBR>1 ulp</NOBR>) from what it should +be. +(Bug discovered by Paul Donahue.) + +<LI> +Improved the Makefiles. +</UL> + + +<H3>Release 2 (1997 June)</H3> + +<UL> + +<LI> +Created the <NOBR>64-bit</NOBR> (<CODE>bits64</CODE>) version, adding the +<CODE>floatx80</CODE> and <CODE>float128</CODE> formats. + +<LI> +Changed the source directory structure, splitting the sources into a +<CODE>bits32</CODE> and a <CODE>bits64</CODE> version. +Renamed <CODE>environment.h</CODE> to <CODE>milieu.h</CODE> to avoid confusion +with environment variables. + +<LI> +Fixed a small error that caused <CODE>float64_round_to_int</CODE> often to +round the wrong way in nearest/even mode when the operand was between +2<SUP>20</SUP> and 2<SUP>21</SUP> and halfway between two integers. + +</UL> + + +<H3>Release 1a (1996 July)</H3> + +<UL> + +<LI> +Corrected a mistake that caused borderline underflow cases not to raise the +underflow flag when they should have. +(Problem reported by Doug Priest.) + +<LI> +Added the <CODE>float_detect_tininess</CODE> variable to control whether +tininess is detected before or after rounding. + +</UL> + + +<H3>Release 1 (1996 July)</H3> + +<UL> + +<LI> +Original release. + +</UL> + + +</BODY> + |