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+
+<HTML>
+
+<HEAD>
+<TITLE>Berkeley SoftFloat History</TITLE>
+</HEAD>
+
+<BODY>
+
+<H1>History of Berkeley SoftFloat, to Release 3a</H1>
+
+<P>
+John R. Hauser<BR>
+2015 October 23<BR>
+</P>
+
+
+<H3>Release 3a (2015 October)</H3>
+
+<UL>
+
+<LI>
+Replaced the license text supplied by the University of California, Berkeley.
+
+</UL>
+
+
+<H3>Release 3 (2015 February)</H3>
+
+<UL>
+
+<LI>
+Complete rewrite, funded by the University of California, Berkeley, and
+consequently having a different use license than earlier releases.
+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 (2015 January)</H3>
+
+<UL>
+
+<LI>
+Fixed mistakes affecting some <NOBR>64-bit</NOBR> processors.
+
+<LI>
+Further improved the documentation and the wording for the legal restrictions
+on using SoftFloat releases <NOBR>through 2c</NOBR> (not applicable to
+<NOBR>Release 3</NOBR> or later).
+
+</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, based on work done for the International Computer Science
+Institute (ICSI) in Berkeley, California.
+
+</UL>
+
+
+</BODY>
+