NetBSD

History

bjh21 936b7f4cf8 Import the 32-bit version of SoftFloat 2a and separate it and the 64-bit version into different directories. Which version a given port uses is controlled by the SOFTFLOAT_BITS make variable. This is set to 64 (which uses the same code we had before) by default. 32-bit platforms that don't need extended precision support might get better performance by using 32. Set the ARM port to use the 32-bit version of SoftFloat, since this is more than a factor of two faster than the 64-bit version. This should get the floating-point performance back to what it was in 1.5.		2002-05-21 23:51:04 +00:00
..
bits32	Import the 32-bit version of SoftFloat 2a and separate it and the 64-bit	2002-05-21 23:51:04 +00:00
bits64	Import the 32-bit version of SoftFloat 2a and separate it and the 64-bit	2002-05-21 23:51:04 +00:00
templates
eqdf2.c
eqsf2.c
fpgetmask.c	Add SIGFPE support to SoftFloat, so fpsetmask/fpgetmask now work. A new	2002-05-12 13:12:45 +00:00
fpgetround.c	Add internal names for fp{get,set}{mask,round,sticky}(), and	2002-01-13 21:45:39 +00:00
fpgetsticky.c	Add internal names for fp{get,set}{mask,round,sticky}(), and	2002-01-13 21:45:39 +00:00
fpsetmask.c	Add SIGFPE support to SoftFloat, so fpsetmask/fpgetmask now work. A new	2002-05-12 13:12:45 +00:00
fpsetround.c	Add internal names for fp{get,set}{mask,round,sticky}(), and	2002-01-13 21:45:39 +00:00
fpsetsticky.c	Add internal names for fp{get,set}{mask,round,sticky}(), and	2002-01-13 21:45:39 +00:00
gedf2.c
gesf2.c
gtdf2.c
gtsf2.c
ledf2.c
lesf2.c
ltdf2.c
ltsf2.c
Makefile.inc	Import the 32-bit version of SoftFloat 2a and separate it and the 64-bit	2002-05-21 23:51:04 +00:00
nedf2.c
negdf2.c
negsf2.c
nesf2.c
README.NetBSD	Import the 32-bit version of SoftFloat 2a and separate it and the 64-bit	2002-05-21 23:51:04 +00:00
README.txt
softfloat-for-gcc.h	Add SIGFPE support to SoftFloat, so fpsetmask/fpgetmask now work. A new	2002-05-12 13:12:45 +00:00
softfloat-history.txt
softfloat-source.txt
softfloat-specialize	Add SIGFPE support to SoftFloat, so fpsetmask/fpgetmask now work. A new	2002-05-12 13:12:45 +00:00
softfloat.txt
timesoftfloat.c
timesoftfloat.txt

README.txt

$NetBSD: README.txt,v 1.1 2000/06/06 08:15:02 bjh21 Exp $

Package Overview for SoftFloat Release 2a

John R. Hauser
1998 December 13


SoftFloat is a software implementation of floating-point that conforms to
the IEC/IEEE Standard for Binary Floating-Point Arithmetic.  SoftFloat is
distributed in the form of C source code.  Compiling the SoftFloat sources
generates two things:

-- A SoftFloat object file (typically `softfloat.o') containing the complete
   set of IEC/IEEE floating-point routines.

-- A `timesoftfloat' program for evaluating the speed of the SoftFloat
   routines.  (The SoftFloat module is linked into this program.)

The SoftFloat package is documented in four text files:

   softfloat.txt          Documentation for using the SoftFloat functions.
   softfloat-source.txt   Documentation for compiling SoftFloat.
   softfloat-history.txt  History of major changes to SoftFloat.
   timesoftfloat.txt      Documentation for using `timesoftfloat'.

Other files in the package comprise the source code for SoftFloat.

Please be aware that some work is involved in porting this software to other
targets.  It is not just a matter of getting `make' to complete without
error messages.  I would have written the code that way if I could, but
there are fundamental differences between systems that I can't make go away.
You should not attempt to compile SoftFloat without first reading both
`softfloat.txt' and `softfloat-source.txt'.

At the time of this writing, the most up-to-date information about
SoftFloat and the latest release can be found at the Web page `http://
HTTP.CS.Berkeley.EDU/~jhauser/arithmetic/SoftFloat.html'.