kleink
11e6c54cfc
C99: Define a NAN macro in <math.h> which evaulates to a constant expression of
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a single-precision quiet NaN; only to be defined on platforms that do support
this value.
1999-12-23 10:15:05 +00:00
mycroft
b3b07a4c6e
Another microoptimization. Take advantage of the addition already having set
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the flags for the <=0 comparison.
1999-08-30 18:28:24 +00:00
mycroft
0560606383
Reuse the trick of loading 0.0 (rather than 1.0) and then modifying the
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exponent. It's a bit faster on some machines.
1999-08-30 18:01:40 +00:00
augustss
75d2dfe657
Remove more unused mulexp variables.
1999-08-30 15:11:32 +00:00
mycroft
5f34ffabca
ldexp(denormal, exp>1023) would generate the wrong result in all non-overflow
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cases. Totally rework this code to fix this bug *and* make it faster.
1999-08-29 22:45:32 +00:00
mycroft
02a48bde49
Don't ever return -0.0.
1999-08-29 19:04:02 +00:00
mycroft
0d708431b7
Minor style change.
1999-08-29 18:40:50 +00:00
mycroft
ea4b733810
Trivial KNF.
1999-08-29 18:39:35 +00:00
mycroft
6850b97bb3
Sync with SPARC version.
1999-08-29 18:35:51 +00:00
mycroft
099dd01a1d
Make the C version of frexp() consitent across platforms, and handle the
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Inf/NaN case.
1999-08-29 18:30:14 +00:00
mycroft
17030e8106
Separate isnan() into a separate module, and make isinf()/isnan() use ieee.h.
1999-08-29 18:08:27 +00:00
ross
c5a82dd848
* New MI man page for fp{set,get}{round,sticky,mask}(3).
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* Implement fpgetsticky() for alpha.
* Direct fpsetsticky() and fp{get,set}mask() into alpha kernel via sysarch(2).
* Define new sysarch(2) stub for above and install and distribute sysarch.h
for alpha. (The fpcr IS user mode r/w, but for reasons beyond the scope
of a commit message kernel calls are needed.) And much kernel Magick is
required before these do anything, but this way programs compiled under
1.4 will DTRT on future snapshots and releases.
1999-04-30 00:58:30 +00:00
mycroft
2b504929fa
Just some minor cleanup.
1999-03-10 08:15:43 +00:00
mycroft
da8a0f49c7
Whitespace fix.
1999-01-22 11:01:04 +00:00
mycroft
99355f3153
Use insbl to reduce by 1 instruction.
1999-01-22 10:59:18 +00:00
bouyer
dc306354b0
Move the bswap functions from libutil to libc (this bups the
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minor of libc and the major of libutil). For little-endian architectures
merge the bnswap() assembly versions with nto* and hton* using symbols
aliasing. Use symbol renaming for the bswap function in this case to avoid
namespace pollution.
Declare bswap* in machine/bswap.h, not machine/endian.h. For little-endian
machines, common code for inline macros go in machine/byte_swap.h
Sync libkern with libc.
Adjust #include in kernel sources for machine/bswap.h.
1999-01-15 13:31:15 +00:00
christos
7c990e0c7b
delint
1998-11-14 19:31:01 +00:00
kleink
d541ca6d80
Need internal names for isinf() and isnan().
1998-10-13 14:43:36 +00:00
thorpej
2af42e072f
Signal changes for Alpha.
1998-09-29 03:01:37 +00:00
mycroft
982e920022
const poisoning.
1998-07-26 14:13:00 +00:00
thorpej
6efbfe5247
Make setjmp() work again after the changes to sigaltstack().
1997-12-05 02:06:27 +00:00
cgd
0f191bd9d2
remove these, they are no longer necessary or appropriate
1997-11-05 22:33:28 +00:00
thorpej
ef909f429a
Pull in __flt_rounds() prototype.
1997-07-18 00:30:30 +00:00
christos
42a71b4d7b
Add missing stdlib.h include
1997-07-13 18:35:25 +00:00
cgd
4a6fd887f0
File which provides lint stubs for the functions defined by
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machine-dependent assembly code, whose source files live in its directory.
(Not necessarily complete yet.)
1996-12-22 11:44:55 +00:00
cgd
55c6bc901c
catch up with <machine/asm.h> changes, SYS.h changes, and the removal
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of DEFS.h
1996-10-17 03:08:03 +00:00
cgd
86a813e847
remove unused local label
1996-09-09 00:51:27 +00:00
cgd
7a8e7b22a1
deal properly (i hope!) with registers' upper 32 bits, when doing
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32-bit division and remainder. Sometimes, when optimizing, they could
have been different than previously expected (and could have caused
hokey results).
1995-09-30 03:09:07 +00:00
cgd
2940a41ce2
kill some now-bogus XXX's
1995-09-30 02:14:17 +00:00
cgd
adca5aa4fc
save & restore the argument registers, too. from Trevor Blackwell
1995-08-14 02:20:07 +00:00
cgd
d2e405e546
functions to set FP exception masks & sticky exceptions. they abort, for now.
1995-04-29 05:10:55 +00:00
cgd
3e14f3894b
get & set FP rounding direction. these actually seem to work.
1995-04-29 05:09:53 +00:00
cgd
234eecadfb
add entries for the float rounding and exception functions
1995-04-29 05:09:14 +00:00
cgd
572e3f3188
don't forget inifinity.c
1995-02-25 16:24:22 +00:00
cgd
ea1ca14ecb
need these for new gen/Makefile
1995-02-25 16:20:12 +00:00
cgd
3f45f31f15
strange corner cases:
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(1) zero top 32 bits for 32-bit unsigned ops; 32-bit value can
be accidentally(?) sign-extended by the compiler/assembler.
(2) fix return value for mod's that cause traps
1995-02-25 03:09:32 +00:00
cgd
e4f5181d15
libc support for the alpha. more functions should be written in assembler,
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but that's optimization. 8-)
1995-02-10 17:49:48 +00:00