mit-scheme.git
5 years agoFix floating-point alignment stuff.
Taylor R Campbell [Wed, 12 Dec 2018 16:19:16 +0000 (16:19 +0000)]
Fix floating-point alignment stuff.

- Allow fasdump-storage of #f for alignment.
- Use only one mechanism for alignment, not two competing ones that
  step on each other's toes.

5 years agoMore line breaks for clarity.
Taylor R Campbell [Tue, 11 Dec 2018 23:50:41 +0000 (23:50 +0000)]
More line breaks for clarity.

5 years agoFix environment this test runs in.
Taylor R Campbell [Tue, 11 Dec 2018 23:50:07 +0000 (23:50 +0000)]
Fix environment this test runs in.

5 years agoRestore separation of syntax-* and compile-* targets.
Taylor R Campbell [Tue, 11 Dec 2018 22:35:20 +0000 (22:35 +0000)]
Restore separation of syntax-* and compile-* targets.

This gives better parallelism; no need to wait for the runtime .com
files when we just need the .pkd from the .bin files for cref.

5 years agoMake these tests run on svm1.
Taylor R Campbell [Tue, 11 Dec 2018 22:28:17 +0000 (22:28 +0000)]
Make these tests run on svm1.

5 years agoFix fixnum range.
Taylor R Campbell [Tue, 11 Dec 2018 22:01:18 +0000 (22:01 +0000)]
Fix fixnum range.

5 years agoExercise some more fasdump cases. Fix missing definition.
Taylor R Campbell [Tue, 11 Dec 2018 21:58:52 +0000 (21:58 +0000)]
Exercise some more fasdump cases.  Fix missing definition.

Small bignums are busted.

5 years agoTeach `make cross-host' to convert .nib -> .bin &c.
Taylor R Campbell [Tue, 11 Dec 2018 15:59:30 +0000 (15:59 +0000)]
Teach `make cross-host' to convert .nib -> .bin &c.

This is more expedient for now than finding all the places in SF/CREF
that fasdump anything to fasdump both the .nib and the .bin file.

5 years agoNew make target install-toolchain just installs the toolchain.
Taylor R Campbell [Tue, 11 Dec 2018 15:54:48 +0000 (15:54 +0000)]
New make target install-toolchain just installs the toolchain.

Useful for working on the cross-compiler when we don't need Edwin &c.

5 years agoMake `make all-toolchain' also build sos, ssp, and xml.
Taylor R Campbell [Tue, 11 Dec 2018 15:57:32 +0000 (15:57 +0000)]
Make `make all-toolchain' also build sos, ssp, and xml.

These are needed in the cross-compiler during cross-host.

5 years agoDo all-compiler/sf/cref only in cross-host, not in cross-target.
Taylor R Campbell [Tue, 11 Dec 2018 15:55:42 +0000 (15:55 +0000)]
Do all-compiler/sf/cref only in cross-host, not in cross-target.

In the cross-compiled system when doing cross-target, which depends
on runtime.com and all.com, the dependencies of runtime.com and
all.com were already made by cross-host.

5 years agoTeach cross-SF/CREF to dump/load in .nib, .txe, .dkp.
Taylor R Campbell [Tue, 11 Dec 2018 15:52:07 +0000 (15:52 +0000)]
Teach cross-SF/CREF to dump/load in .nib, .txe, .dkp.

These correspond to .bin, .ext, .pkd.  LOAD-OPTION still loads from
.bin, .ext, .pkd (and .com) for libraries that are installed and are
not macro definitions of subsystems being cross-compiled.

This backwards suffix business is getting a little out of hand.
Possible partial alternatives:

- .xbin/.xext/.xpkd

- invent a static linker in the toolchain that can run on the cross
  host rather than using make.scm and disk-save in the cross target

- devise a portable fasload that sf/cref can use in the cross host

- use a machine-independent file format for .bin/.ext/.pkd

5 years agoMove fasl version check earlier.
Taylor R Campbell [Tue, 11 Dec 2018 15:48:03 +0000 (15:48 +0000)]
Move fasl version check earlier.

This breaks INHIBIT_FASL_VERSION_CHECK -- but that was already broken
so that Scheme would abort (!) before even getting to the check,
because of the conditional in fasl_object_address which is called by
decode_fasl_header.

If someone wants to revive INHIBIT_FASL_VERSION_CHECK, be my guest,
though it might be easier to do whatever you're trying to do with the
portable fasdumper instead.

5 years agoSplit svm1 into four architectures: svm1 x {32,64} x {be,le}.
Taylor R Campbell [Tue, 11 Dec 2018 15:44:19 +0000 (15:44 +0000)]
Split svm1 into four architectures: svm1 x {32,64} x {be,le}.

--with-cross-target must specify exactly which one to use for now.

--enable-native-code=svm1 or svm1-le or svm1-64 will fill in the
remaining parameters (word size, byte order) from the host system
characteristics.

5 years agoMake `make cross-target' work in three stages.
Taylor R Campbell [Tue, 11 Dec 2018 15:35:34 +0000 (15:35 +0000)]
Make `make cross-target' work in three stages.

1. moc->com in runtime, so the next stages can use a compiled runtime
2. moc->com in the whole tree
3. fni->inf in the whole tree

XXX Maybe the latter stages can be combined; for now this change just
splits the first two apart.  Even better, maybe we can nix this step
altogether and teach the cross-fasdumper to do this part itself.
Wouldn't be hard to teach the cross-fasdumper to do the relocation
that currently requires sketchy with-absolutely-no-interrupts crap.
For compile-scode, could maybe just fasdump to a bytevector in memory
and invent a primitive to fasload from that.

5 years agoTweak fasdumper to null-terminate bytevectors too.
Taylor R Campbell [Tue, 11 Dec 2018 15:32:34 +0000 (15:32 +0000)]
Tweak fasdumper to null-terminate bytevectors too.

find_primitive relies on symbol names (which were formerly `strings',
i.e. `vector-8b' or TC_CHARACTER_STRING, and are now `bytevectors')
to be null-terminated.

Rather than try to figure out which ones are primitive names and
which ones are not, we'll just null-terminate all of them.

We can undo this if we change find_primitive.  (We need to change the
compile-time tool findprim.c anyway because its strcmp_ci misuses
islower/toupper.)

5 years agoMerge remote-tracking branch 'origin/master' into cross-fasdump-v2
Taylor R Campbell [Tue, 11 Dec 2018 15:17:33 +0000 (15:17 +0000)]
Merge remote-tracking branch 'origin/master' into cross-fasdump-v2

5 years agoGenerate char sets for each UCD general category and numeric type.
Chris Hanson [Tue, 11 Dec 2018 07:31:15 +0000 (23:31 -0800)]
Generate char sets for each UCD general category and numeric type.

And use these to avoid expensive computations in ucd-glue.

5 years agoFix bug in inverting empty character set.
Chris Hanson [Tue, 11 Dec 2018 07:30:37 +0000 (23:30 -0800)]
Fix bug in inverting empty character set.

5 years agoFix bug in string-copy!.
Chris Hanson [Mon, 10 Dec 2018 07:00:55 +0000 (23:00 -0800)]
Fix bug in string-copy!.

5 years agoAdd tests for string-copy!, which has a bug.
Chris Hanson [Mon, 10 Dec 2018 07:00:18 +0000 (23:00 -0800)]
Add tests for string-copy!, which has a bug.

5 years agoAdd support for 'expect-failure? property on assertions.
Chris Hanson [Mon, 10 Dec 2018 06:58:55 +0000 (22:58 -0800)]
Add support for 'expect-failure? property on assertions.

This allows an individual assertion to be marked as broken.  When the problem is
fixed, the property can be removed.

5 years agoEliminate use of TC_LEGACY_STRING for symbol names.
Chris Hanson [Mon, 10 Dec 2018 04:39:37 +0000 (20:39 -0800)]
Eliminate use of TC_LEGACY_STRING for symbol names.

5 years agoChange all string operations that accept chars to work for any char.
Chris Hanson [Sun, 9 Dec 2018 05:02:07 +0000 (21:02 -0800)]
Change all string operations that accept chars to work for any char.

They dump the bucky bits as needed to make this work.

5 years agoImplement char->bitless-char.
Chris Hanson [Sun, 9 Dec 2018 02:26:45 +0000 (18:26 -0800)]
Implement char->bitless-char.

5 years agoMerge remote-tracking branch 'origin/master' into cross-fasdump-v2
Taylor R Campbell [Sun, 9 Dec 2018 00:28:53 +0000 (00:28 +0000)]
Merge remote-tracking branch 'origin/master' into cross-fasdump-v2

5 years agoUse binary-port-position directly, not via kludgey indirection.
Taylor R Campbell [Sun, 9 Dec 2018 00:12:56 +0000 (00:12 +0000)]
Use binary-port-position directly, not via kludgey indirection.

5 years agoRename fasdump-format -> fasl-format.
Taylor R Campbell [Sun, 9 Dec 2018 00:06:10 +0000 (00:06 +0000)]
Rename fasdump-format -> fasl-format.

Only the fasdump side is implemented portably, but no reason the
concept need be different.

Fix up compiler package exports while here.

5 years agoAutomatically determine host fasl format.
Taylor R Campbell [Sat, 8 Dec 2018 23:57:59 +0000 (23:57 +0000)]
Automatically determine host fasl format.

5 years agoFasdump weak false.
Taylor R Campbell [Sat, 8 Dec 2018 23:54:30 +0000 (23:54 +0000)]
Fasdump weak false.

(Maybe this should just not be constant-folded?)

5 years agoDefine more arm variants: {le,be} x {32,64}.
Taylor R Campbell [Sat, 8 Dec 2018 23:54:15 +0000 (23:54 +0000)]
Define more arm variants: {le,be} x {32,64}.

5 years agox11/Makefile.am: Fix packaging, TAGS.
Matt Birkholz [Sat, 8 Dec 2018 19:57:24 +0000 (12:57 -0700)]
x11/Makefile.am: Fix packaging, TAGS.

(Re)define c_sources so they appear in TAGS.  Include compile.scm in
EXTRA_DIST.  Punt empty un/install hooks and unnecessary overrides.

5 years agoruntime/rfc2822-headers: Watch out for eof-object.
Matt Birkholz [Sat, 8 Dec 2018 20:07:32 +0000 (13:07 -0700)]
runtime/rfc2822-headers: Watch out for eof-object.

And leave parse-error calls in tail position, so as not to frustrate a
debugger expecting to return the correct answer.

5 years agoffi/build: Mixing strings and pathnames is problematic.
Matt Birkholz [Sat, 8 Dec 2018 19:21:06 +0000 (12:21 -0700)]
ffi/build: Mixing strings and pathnames is problematic.

In this case rewrite-compressed-file expected a string.  It probably
should expect a pathname, but it is just going to get weird with it.

5 years agoHandle reference traps and interpreter return addresses.
Taylor R Campbell [Sat, 8 Dec 2018 16:37:04 +0000 (16:37 +0000)]
Handle reference traps and interpreter return addresses.

5 years agoDust off portable fasdumper.
Taylor R Campbell [Sat, 8 Dec 2018 15:16:58 +0000 (15:16 +0000)]
Dust off portable fasdumper.

Write some trivial tests.  Missing a few still.

5 years agoFix binary-port-position for output ports.
Taylor R Campbell [Sat, 8 Dec 2018 14:19:46 +0000 (14:19 +0000)]
Fix binary-port-position for output ports.

Not sure if it'll DTRT for combined i/o ports; need more tests!

5 years agoExport binary-port-position and set-binary-port-position!.
Taylor R Campbell [Sat, 8 Dec 2018 14:10:14 +0000 (14:10 +0000)]
Export binary-port-position and set-binary-port-position!.

Currently busted for output ports.

5 years agoSupply the new primitives with arities so release-10 can build this.
Taylor R Campbell [Sat, 8 Dec 2018 14:09:33 +0000 (14:09 +0000)]
Supply the new primitives with arities so release-10 can build this.

5 years agoUpdate test-syntax-rename to work with syntax changes.
Chris Hanson [Sat, 8 Dec 2018 08:23:06 +0000 (00:23 -0800)]
Update test-syntax-rename to work with syntax changes.

5 years agoAdd param:trace-syntax? to help debugging syntax expansion.
Chris Hanson [Sat, 8 Dec 2018 08:19:31 +0000 (00:19 -0800)]
Add param:trace-syntax? to help debugging syntax expansion.

5 years agoAdd print method to quoted-identifier.
Chris Hanson [Sat, 8 Dec 2018 06:24:59 +0000 (22:24 -0800)]
Add print method to quoted-identifier.

5 years agoFix: allow compiler to be compiled with current release.
Chris Hanson [Thu, 6 Dec 2018 15:04:35 +0000 (07:04 -0800)]
Fix: allow compiler to be compiled with current release.

5 years agoTweak all the syntax tests now that they are fixed.
Chris Hanson [Thu, 6 Dec 2018 07:48:31 +0000 (23:48 -0800)]
Tweak all the syntax tests now that they are fixed.

5 years agoAdd assertion that does pattern matching; useful for syntax testing.
Chris Hanson [Thu, 6 Dec 2018 07:47:01 +0000 (23:47 -0800)]
Add assertion that does pattern matching; useful for syntax testing.

5 years agoEliminate now-unnecessary exports.
Chris Hanson [Thu, 6 Dec 2018 07:46:45 +0000 (23:46 -0800)]
Eliminate now-unnecessary exports.

5 years agoRewrite environment implementation to clear up ambiguities.
Chris Hanson [Thu, 6 Dec 2018 07:46:03 +0000 (23:46 -0800)]
Rewrite environment implementation to clear up ambiguities.

See the extensive note at the beginning for details.

5 years agoImplement spar-funcall to call a procedure and ignore its value.
Chris Hanson [Thu, 6 Dec 2018 07:43:41 +0000 (23:43 -0800)]
Implement spar-funcall to call a procedure and ignore its value.

5 years agoEliminate unnecessary use of strip-syntactic-closures.
Chris Hanson [Thu, 6 Dec 2018 07:43:05 +0000 (23:43 -0800)]
Eliminate unnecessary use of strip-syntactic-closures.

5 years agoFix some minor bugs in syntax renaming.
Chris Hanson [Thu, 6 Dec 2018 07:42:49 +0000 (23:42 -0800)]
Fix some minor bugs in syntax renaming.

5 years agoIn er-macro-transformer, guarantee that two renames of a symbol are eq?.
Chris Hanson [Thu, 6 Dec 2018 07:41:37 +0000 (23:41 -0800)]
In er-macro-transformer, guarantee that two renames of a symbol are eq?.

5 years agoSyntax renaming now handles declarations correctly.
Chris Hanson [Thu, 6 Dec 2018 07:40:36 +0000 (23:40 -0800)]
Syntax renaming now handles declarations correctly.

5 years agoEliminate inaccurate comment.
Chris Hanson [Tue, 4 Dec 2018 04:47:55 +0000 (20:47 -0800)]
Eliminate inaccurate comment.

5 years agosyntax-rules: eliminate use of rename for creating new identifiers.
Chris Hanson [Fri, 30 Nov 2018 06:45:50 +0000 (22:45 -0800)]
syntax-rules: eliminate use of rename for creating new identifiers.

This confusion is one of several that has resulted from long-term muddy thinking
on my part, and is a contributor to the bug that was filed.

Also, clean up the code a bit in preparation for further changes required by
R7RS.

5 years agoManually merge cross-fasdump branch.
Taylor R Campbell [Tue, 13 Nov 2018 06:33:48 +0000 (06:33 +0000)]
Manually merge cross-fasdump branch.

Draft portable fasdumper for cross-compilation.  Likely doesn't work
right now.

5 years agoAdd cross-compilation test.
Taylor R Campbell [Sat, 8 Dec 2018 06:12:18 +0000 (06:12 +0000)]
Add cross-compilation test.

5 years agoAdd trivial compiler test with floating-point literals.
Taylor R Campbell [Sat, 8 Dec 2018 05:48:43 +0000 (05:48 +0000)]
Add trivial compiler test with floating-point literals.

5 years agoUse the parser state, not the value produced, to determine success.
Taylor R Campbell [Fri, 7 Dec 2018 17:11:07 +0000 (17:11 +0000)]
Use the parser state, not the value produced, to determine success.

5 years agoMore polar screw cases.
Taylor R Campbell [Fri, 7 Dec 2018 17:10:38 +0000 (17:10 +0000)]
More polar screw cases.

5 years agoPass the _type_ of complex component through the parser.
Taylor R Campbell [Fri, 7 Dec 2018 17:03:02 +0000 (17:03 +0000)]
Pass the _type_ of complex component through the parser.

Restores polar notation.

5 years agoOops, this broke polar notation.
Taylor R Campbell [Fri, 7 Dec 2018 16:57:01 +0000 (16:57 +0000)]
Oops, this broke polar notation.

5 years agoReject multiple zero real components by parse states.
Taylor R Campbell [Fri, 7 Dec 2018 16:51:48 +0000 (16:51 +0000)]
Reject multiple zero real components by parse states.

Rejecting on a zero real part of parsing an imaginary suffix was cute
but leads to wacky quirks in accepted notation.

5 years agoAdd some more screw cases.
Taylor R Campbell [Fri, 7 Dec 2018 16:42:30 +0000 (16:42 +0000)]
Add some more screw cases.

5 years agoReject inf and NaN with #e notation.
Taylor R Campbell [Fri, 7 Dec 2018 16:00:07 +0000 (16:00 +0000)]
Reject inf and NaN with #e notation.

There is no exact infinity or exact NaN.

5 years agoProvide notation for NaN payload and signalling NaN.
Taylor R Campbell [Fri, 7 Dec 2018 15:51:28 +0000 (15:51 +0000)]
Provide notation for NaN payload and signalling NaN.

Reader has various edge cases we fail to make errors still.

5 years agostring->number returns false on error.
Taylor R Campbell [Fri, 7 Dec 2018 15:45:43 +0000 (15:45 +0000)]
string->number returns false on error.

5 years agoMake this unreachable case an error.
Taylor R Campbell [Fri, 7 Dec 2018 04:48:47 +0000 (04:48 +0000)]
Make this unreachable case an error.

5 years agoFix printing NaN sign.
Taylor R Campbell [Fri, 7 Dec 2018 04:48:34 +0000 (04:48 +0000)]
Fix printing NaN sign.

5 years agoMore tests for signed NaN notation.
Taylor R Campbell [Fri, 7 Dec 2018 04:45:33 +0000 (04:45 +0000)]
More tests for signed NaN notation.

Only the positive quiet NaN with payload 0 is read/write invariant so
far.

5 years agoFix sign of NaN in reader.
Taylor R Campbell [Fri, 7 Dec 2018 04:42:29 +0000 (04:42 +0000)]
Fix sign of NaN in reader.

5 years agoExpand test-numpar.scm a little with some bugs.
Taylor R Campbell [Fri, 7 Dec 2018 04:38:20 +0000 (04:38 +0000)]
Expand test-numpar.scm a little with some bugs.

5 years agoMake flo:nan.0 reliably return a `positive' quiet NaN with payload 0.
Taylor R Campbell [Fri, 7 Dec 2018 04:16:41 +0000 (04:16 +0000)]
Make flo:nan.0 reliably return a `positive' quiet NaN with payload 0.

5 years agoFix bug in flo:make-nan error reporting.
Taylor R Campbell [Fri, 7 Dec 2018 04:12:03 +0000 (04:12 +0000)]
Fix bug in flo:make-nan error reporting.

error_bad_range_arg takes argument number, not argument value.

5 years agoflo:make-nan error reporting is busted.
Taylor R Campbell [Fri, 7 Dec 2018 04:11:01 +0000 (04:11 +0000)]
flo:make-nan error reporting is busted.

5 years agoConfirm #i works with inf and nan.
Taylor R Campbell [Fri, 7 Dec 2018 03:55:05 +0000 (03:55 +0000)]
Confirm #i works with inf and nan.

5 years agoThere is no exact infinity or NaN, so #e should reject them.
Taylor R Campbell [Fri, 7 Dec 2018 03:54:00 +0000 (03:54 +0000)]
There is no exact infinity or NaN, so #e should reject them.

But we produce them anyway.

5 years agox86 push can take a memory reference operand.
Taylor R Campbell [Wed, 5 Dec 2018 05:56:55 +0000 (05:56 +0000)]
x86 push can take a memory reference operand.

Conveniently, it evaluates rsp before modifying it too.

Shaves about 1% off the runtime.

5 years agoPrint newline in debugging-printer primitive.
Taylor R Campbell [Wed, 5 Dec 2018 05:58:07 +0000 (05:58 +0000)]
Print newline in debugging-printer primitive.

5 years agoDisable allocator open coders.
Taylor R Campbell [Tue, 4 Dec 2018 06:15:17 +0000 (06:15 +0000)]
Disable allocator open coders.

These don't actually do anything useful.  What they do is open-code a
type check -- and then branch to the same primitive call whether the
type check passed or failed.  So they serve only to expand the code.
This appears to have been an aborted experiment in the HP PA-RISC back
end from 1993.

5 years agoAdd missing type checks to some bit string operations.
Taylor R Campbell [Mon, 3 Dec 2018 09:19:01 +0000 (09:19 +0000)]
Add missing type checks to some bit string operations.

5 years agoBit string primitives are missing type checks.
Taylor R Campbell [Mon, 3 Dec 2018 09:18:13 +0000 (09:18 +0000)]
Bit string primitives are missing type checks.

5 years agoTeach pp to respect custom print methods for tagged vectors.
Taylor R Campbell [Sun, 2 Dec 2018 03:32:42 +0000 (03:32 +0000)]
Teach pp to respect custom print methods for tagged vectors.

5 years agopp doesn't respect custom print methods for tagged vectors.
Taylor R Campbell [Sun, 2 Dec 2018 03:29:16 +0000 (03:29 +0000)]
pp doesn't respect custom print methods for tagged vectors.

5 years agoRework vector tag printer methods so they work again.
Taylor R Campbell [Sun, 2 Dec 2018 02:45:35 +0000 (02:45 +0000)]
Rework vector tag printer methods so they work again.

XXX Needs tests, but these are a pain to construct...

5 years agopp _is_ busted after all but it takes a hairier example.
Taylor R Campbell [Sun, 2 Dec 2018 02:08:58 +0000 (02:08 +0000)]
pp _is_ busted after all but it takes a hairier example.

5 years agopp is not busted; I just didn't know about pp-avoid-circularity.
Taylor R Campbell [Sun, 2 Dec 2018 02:00:17 +0000 (02:00 +0000)]
pp is not busted; I just didn't know about pp-avoid-circularity.

TIL.

5 years agoMake pp's job easier in this test. (Still busted.)
Taylor R Campbell [Sun, 2 Dec 2018 01:56:52 +0000 (01:56 +0000)]
Make pp's job easier in this test.  (Still busted.)

5 years agoFix find-shared-objects. pp is still busted.
Taylor R Campbell [Sun, 2 Dec 2018 01:55:45 +0000 (01:55 +0000)]
Fix find-shared-objects.  pp is still busted.

5 years agofind-shared-objects is busted for multiple references.
Taylor R Campbell [Sun, 2 Dec 2018 01:53:02 +0000 (01:53 +0000)]
find-shared-objects is busted for multiple references.

5 years agopp is busted on circular data structures.
Taylor R Campbell [Sun, 2 Dec 2018 01:35:04 +0000 (01:35 +0000)]
pp is busted on circular data structures.

5 years agoAllow the full form of FLUID-LET with ACCESS.
Taylor R Campbell [Sun, 2 Dec 2018 01:34:41 +0000 (01:34 +0000)]
Allow the full form of FLUID-LET with ACCESS.

5 years agoFLUID-LET of ACCESS broke.
Taylor R Campbell [Sun, 2 Dec 2018 01:33:44 +0000 (01:33 +0000)]
FLUID-LET of ACCESS broke.

(Yes, I know it's legacy, but I need it for another test at the
moment.)

5 years agoTickled a bug in connectivity analysis with arity error.
Taylor R Campbell [Sun, 2 Dec 2018 01:00:20 +0000 (01:00 +0000)]
Tickled a bug in connectivity analysis with arity error.

5 years agoCompiler chokes on a variable named |#[continuation]|.
Taylor R Campbell [Sun, 2 Dec 2018 00:14:53 +0000 (00:14 +0000)]
Compiler chokes on a variable named |#[continuation]|.

5 years agoOpen-code some flonum predicates on amd64.
Taylor R Campbell [Sat, 1 Dec 2018 23:04:19 +0000 (23:04 +0000)]
Open-code some flonum predicates on amd64.

- flonum-is-equal?
- flonum-is-finite?
- flonum-is-infinite?
- flonum-is-nan?
- flonum-is-normal?
- flonum-is-zero?

5 years agoTeach sf about flo:safe-zero? and flo:safe=.
Taylor R Campbell [Sat, 1 Dec 2018 22:50:22 +0000 (22:50 +0000)]
Teach sf about flo:safe-zero? and flo:safe=.

5 years agoSpeed this up a little at the expense of coverage.
Taylor R Campbell [Sat, 1 Dec 2018 22:50:07 +0000 (22:50 +0000)]
Speed this up a little at the expense of coverage.

5 years agoAdd some more spot checks. Zero is not exact here, for sign.
Taylor R Campbell [Sat, 1 Dec 2018 22:49:17 +0000 (22:49 +0000)]
Add some more spot checks.  Zero is not exact here, for sign.

5 years agoTest some more edge cases and exception flags.
Taylor R Campbell [Sat, 1 Dec 2018 22:44:17 +0000 (22:44 +0000)]
Test some more edge cases and exception flags.

5 years agoTeach Scheme about the floating-point subnormal-operand exception.
Taylor R Campbell [Sat, 1 Dec 2018 22:41:56 +0000 (22:41 +0000)]
Teach Scheme about the floating-point subnormal-operand exception.