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(n_choose_k, n_perm_k): New functions.
* arith.h (n_choose_k, n_perm_k): Declared.
* eval.c (eval_init): New functions interned.
* txr.1: Documented.
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so it doesn't have quotes around it.
(cum_norm_dist): New function.
* arith.h (cum_norm_dist): Declared.
* eval.c: Include arith.h.
(eval_init): Register cum_norm_dist as intrinsic.
* txr.1: Documented cum-norm-dist.
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Fixing some errors in copyright comments.
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* arith.h (bignum_from_long): Declared.
* lib.c (int_str): Streamlined. Only use mp_read_radix in the case when
wcstol fails, because now we have bignum_from_long to handle all values
of long. Ensure that the bignum is normalized, in case it falls in the
fixnum range (does not happen on our usual platforms).
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(in_int_ptr_range): New function.
(arith_init): Initialize INT_PTR_MAX_MP.
* arith.h (in_int_ptr_range): Declared.
* lib.c (c_num): Allow bignums to be converted to a cnum, if
they are in range, rather than allowing only fixnums.
* rand.c (make_random_state): Now that we have such a function,
initialize random seed using time value from time_sec_usec rather than
from time and clock. clock is bad for random seeding because it
measures virtual time since the start of the process.
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* arith.h (bignum): Declared.
* configure: Added check for tm_gmtoff and tm_tmzone fields
being present in struct tm.
* eval.c (eval_init): New intrinsic functions: time, time-usec.
* lib.c (num): If the cnum is outside of the fixnum range, then
construct a bignum.
(time_sec, time_sec_usec): New functions.
* lib.h (mut): Slight change to macro to eliminate compiler warning.
(time_sec, time_sec_usec): Declared.
* txr.1: Stub section for time and time-usec.
* txr.vim: Highlighting for time and time-usec.
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* arith.h: Likewise.
* debug.c: Added copyright header.
* debug.h: Updated copyright year.
* eval.c: Likewise.
* eval.h: Likewise.
* filter.c: Likewise.
* filter.h: Likewise.
* gc.c: Likewise.
* gc.h: Likewise.
* hash.c: Likewise.
* hash.h: Likewise.
* lib.c: Likewise.
* lib.h: Likewise.
* match.c: Likewise.
* match.h: Likewise.
* parser.h: Likewise.
* regex.c: Likewise.
* regex.h: Likewise.
* stream.c: Likewise.
* stream.h: Likewise.
* txr.c: Likewise, and e-mail address.
* txr.h: Updated copyright year.
* unwind.c: Likewise.
* unwind.h: Likewise.
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* arith.h (highest_bit): Declared.
* rand.c (random): Rewrote using different algorithm which
ensures even distribution, and avoids doing a bignum mod
operation.
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* arith.h (normalize): Declared.
* rand.c (random): Bugfix: normalize the bignum before returning it.
* txr.1: Doc stubs for PRNG functionality.
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Bignums, based on Michael Fromberger's MPI library, are integrated
into the input syntax, stream output, equality testing, the garbage
collector, and hashing.
The plus operation handles transitions between fixnums and bignums.
Other operations are still fixnum only.
* Makefile (CFLAGS): Add mpi directory to include file search.
(OBJS): Include new arith.o module and all of MPI_OBJS.
(MPI_OBJS, MPI_OBJS_BASE): New variables.
* configure (mpi_version, have_quilt, have_patch): New variables.
Script detects whether patch and quilt are available. Unpacks
mpi library, applies patches. Detects 128 bit integer type.
Records more information in config.h about the sizes of types.
* dep.mk: Updated.
* depend.txr: Make work with paths that have directory components.
* eval.c (eval_init): Rename of nump to fixnump.
* gc.c (finalize, mark_obj): Handle BGNUM case.
* hash.c: (hash_c_str): Changed to return unsigned long
instead of long.
(equal_hash): Handle BGNUM case.
(eql_hash): Handle bignums with equal-hash, but other
objects as eq.
* lib.c (num_s): Variable renamed to fixnum_s.
(bignum_s): New symbol variable.
(code2type): Follow rename of num_s. Handle BGNUM case.
(typeof): Follow rename of num_s.
(eql): Handle bignums using equal, and other types using eq.
(equal): Handle BGNUM case.
(chk_calloc): New function.
(c_num): Wording change in error message: is not a fixnum.
(nump): Renamed to fixnump.
(bignump): New function.
(plus): Function removed, reimplemented in arith.c.
(int_str): Handle integers which are too large for wcstol
using bignum conversion. Base 0 is no longer passed to
wcstol but converted to 10 because the special semantics
for 0 would be inconsistent for bignums.
(obj_init): Follow rename of num_s. Initialize bignum_s.
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