Merge of branch 'hex-float'.
- Add support in byterun/floats.c for conversions between floats and strings in hex notation. We cannot rely on the C standard library here because Microsoft consistently fails at supporting hex notation as standardized in C99. Instead, the conversions are implemented from scratch.
- Add support in the lexer so that hex float literals are recognized in OCaml sources.
- Add support in formats. The ISO C99 format letters for hex floats are %a and %A, but %a is already taken. I chose %h and %H, which are rejected today as bad formats (hence no backward incompatibility) and don't mean anything in C either (h is a modifier, not a format letter).
- Add support in printf. All the trimmings are there in the implementation of %h and %H, including sign modifier and fixed precision.
- Benoit Vaugon contributed support in scanf.
Resolved conflicts:
boot/ocamlc
boot/ocamldep
boot/ocamllex
parsing/lexer.mll
The fix consists in representing float literals by their bit patterns (int64) in the Mach and Linear intermediate languages.
A regression test was added to the test suite.
In PR#6812 garrigue said:
"Note that we do not want to disable visiting of all aliases, but just of
aliases of persistent modules, which is a bit more complex."
Which is not actually quite true, we want to disable visiting aliases of
persistent modules which we haven't already visited.
As suggested in the discussion of GPR#272:
- Do not go through fpclassify() (speedup: 2 to 3)
- Add 64-bit variant of the code (additional speedup: 10%-20%)
Unix.sleepf provides sleep with sub-second resolution.
Unix.sleep is implemented on top of Unix.sleepf.
If a handled signal causes the sleep to return early with an EINTR
error, catch it and restart the sleep for the remaining time.
Continuation of commit dc043a7. The following otherlibs/unix/ functions were not protected:
unix_inet_of_string
unix_getgrnam
unix_getpwnam
unix_initgroups
unix_readlink
unix_utimes
Continuation of commits dc043a7 and 9dfa69e:
- Add checks for the command-line arguments and for the environment
variables passed via Unix.exec* and variants.
Implementation notes:
- Based on c-cube's GPR#227 code, but many Unix functions were missing.
- For Unix.bind and Unix.connect to a PF_UNIX address, tolerate
file names whose first character is '\000': in Linux, these have
a meaning as "abstract socket addresses", and in other operating
systems, the resulting empty path name causes a EINVAL error
(tested under MacOS X).
- Very lightly tested.
- win32unix remains to be fixed.
- float
- int32
- int64
- nativeint
Not for int because the comparison is done directly on the untagged version.
Useful mainly for floats since they can be stored unboxed in records or arrays.
Add the following syntactic sugars, in both expressions and patterns:
- { f : typ = x } to mean { f = (x : typ) }
- { f : typ } to mean { f = (f : typ) }
In expressions, the type annotation can also be a coercion. For
instance: { f :> typ } to mean { f = (f :> typ) }.
Patch by Valentin Gatien-Baron
Xavier Leroy
Xavier Leroy
Gabriel Scherer
lijunsong
alainfrisch
Thomas Refis
Jacques Garrigue
pierreweis
Damien Doligez
Jérémie Dimino
François Bobot
Leo White
Jeremie Dimino
Leo White
Mark Shinwell