1 $NetBSD: softfloat-history.txt,v 1.1 2000/06/06 08:15:08 bjh21 Exp $ 2 3 History of Major Changes to SoftFloat, up to Release 2a 4 5 John R. Hauser 6 1998 December 16 7 8 9 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 10 Release 2a (1998 December) 11 12 -- Added functions to convert between 64-bit integers (int64) and all 13 supported floating-point formats. 14 15 -- Fixed a bug in all 64-bit-version square root functions except 16 `float32_sqrt' that caused the result sometimes to be off by 1 unit in 17 the last place (1 ulp) from what it should be. (Bug discovered by Paul 18 Donahue.) 19 20 -- Improved the makefiles. 21 22 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 23 Release 2 (1997 June) 24 25 -- Created the 64-bit (bits64) version, adding the floatx80 and float128 26 formats. 27 28 -- Changed the source directory structure, splitting the sources into a 29 `bits32' and a `bits64' version. Renamed `environment.h' to `milieu.h' 30 (to avoid confusion with environment variables). 31 32 -- Fixed a small error that caused `float64_round_to_int' often to round the 33 wrong way in nearest/even mode when the operand was between 2^20 and 2^21 34 and halfway between two integers. 35 36 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 37 Release 1a (1996 July) 38 39 -- Corrected a mistake that caused borderline underflow cases not to raise 40 the underflow flag when they should have. (Problem reported by Doug 41 Priest.) 42 43 -- Added the `float_detect_tininess' variable to control whether tininess is 44 detected before or after rounding. 45 46 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 47 Release 1 (1996 July) 48 49 -- Original release. 50 51 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 52 53
