* libguile/numbers.c (scm_finite_p): Add new predicate `finite?' from
R6RS to guile core, which returns #t if and only if its argument is
neither infinite nor a NaN. Note that this is not the same as (not
(inf? x)) or (not (infinite? x)), since NaNs are neither finite nor
infinite.
* test-suite/tests/numbers.test: Add test cases for `finite?'.
* module/rnrs/base.scm: Import `inf?' as `infinite?' instead of
reimplementing it. Previously, the R6RS implementation of
`infinite?' did not detect non-real complex infinities, nor did it
throw exceptions for non-numbers. (Note that NaNs _are_ considered
numbers by scheme, despite their name).
Import `finite?' instead of reimplementing it. Previously, the R6RS
implementation of `finite?' returned #t for both NaNs and non-real
complex infinities, in violation of R6RS.
* NEWS: Add NEWS entries, and reorganize existing numerics-related
entries together under one subheading.
* doc/ref/api-data.texi (Real and Rational Numbers): Add docs for
`finite?' and scm_finite_p.
* libguile/numbers.c (scm_is_integer): Infinities are not integers, per
the R6RS.
(scm_even_p, scm_odd_p): Passing an infinity to even? or odd? is an
error.
* test-suite/tests/numbers.test ("integer?"): Adapt test.
("expt"): Add tests for +inf.0 and -inf.0 exponents.
* NEWS: Add NEWS entries.
Add a new command-line switch `-x', which manipulates the
%load-extensions list.
* libguile/script.c (scm_compile_shell_switches): Process the new "-x"
switch.
(scm_shell_usage): Mention the "-x" switch.
* doc/ref/scheme-scripts.texi (Invoking Guile): Add "-x" switch to the
list of command-line switches.
Signed-off-by: Ludovic Courtès <ludo@gnu.org>
* module/srfi/srfi-45.scm: New file, containing the reference implementation of
SRFI 45, slightly adapted to use SRFI-9.
* module/Makefile.am (SRFI_SOURCES): Added srfi/srfi-45.scm.
* test-suite/tests/srfi-45.test: New file.
* test-suite/Makefile.am (SCM_TESTS): Add tests/srfi-45.test.
* doc/ref/srfi-modules.texi (SRFI-45): New node and subsection;
essentially a shortended transcript of the SRFI-45 specification.
* module/srfi/srfi-42/ec.scm: New file; reference implementation of
SRFI 42.
* module/srfi/srfi-42.scm: New file; module for SRFI 42.
* module/Makefile.am (SRFI_SOURCES): Add srfi/srfi-42.scm.
(NOCOMP_SOURCES): Add srfi/srfi-42/ec.scm.
* test-suite/tests/srfi-42.test: New file; test suite for SRFI 42.
* test-suite/Makefile.am: SCM_TESTS: Add tests/srfi-42.test.
* module/srfi/srfi-27.scm: New file; implementation of SRFI 27 in terms
of the existing random number generator.
* module/Makefile.am (SRFI_SOURCES): Add srfi/srfi-27.scm.
* test-suite/tests/srfi-27.test: New file; minimal test suite for SRFI 27.
* test-suite/Makefile.am (SCM_TESTS): Add tests/srfi-27.test.
* doc/ref/srfi-modules.texi: Add subsection on SRFI-27 based
on the specification.
Now the random number generator state can be obtained in external
(i.e. `read'/`write'-able) form via the new procedure
`random-state->external'. An externalized state can be reinstantiated by
calling `external->random-state'.
* libguile/random.c (scm_i_init_rstate_scm, scm_i_expose_rstate): New
internal functions.
* libguile/random.c (scm_c_make_rstate_scm, scm_external_to_random_state,
scm_random_state_to_external): New public functions.
* libguile/random.h: Add prototypes for the above functions.
* libguile/random.h (scm_t_rng): Add new fields `init_rstate_scm' and
`expose_rstate'.
* libguile/random.c (scm_init_random): Initialize the new fields in
`scm_the_rng'.
