Commit Graph

7 Commits

Author SHA1 Message Date
Neil Toronto
60dd8d065f Fixes for errors Pierpaolo Bernardi found by reviewing the docs; also,
renamed `partition-count' to `partitions' to be consistent with
`permutations', and gave better examples in `multinomial' docs

 * (flulp-error +inf.0 +nan.0) was returning +nan.0 instead of +inf.0

 * Type of `multinomial' didn't match its docs or `flmultinomial'

 * Reworded docs for `diagonal-array'

 * Reworked/reordered quite a few things in docs for `math/bigfloat'

 * Fixed first identity given in `gamma-inc' docs

 * Fixed descrption for `+max.0', etc.
2012-12-17 11:40:37 -07:00
Neil Toronto
6e02d12beb Reimplemented `mpfr_set_z_2exp' in Racket as a fallback for older versions
of libmpfr (like DrDr's) that don't have it

Reimplemented really simple FFI functions (e.g. mpfr-prec, mpfr-exp) to
avoid calling overhead

Renamed `bigfloat-sign' to `bigfloat-signbit'

Renamed `bigfloat-sig+exp' to `bigfloat->sig+exp' (for symmetry with
`sig+exp->bigfloat')
2012-12-06 13:43:23 -07:00
Neil Toronto
d935bc0643 Split "mpfr.rkt" into "gmp.rkt" and "mpfr.rkt"
Fixed bigfloat functions that assumed (fixnum? x) means x fits in a _long
(not true on Win64)

Hopefully fixed dangling pointer errors that broke `math/bigfloat' on Win64.
It apparently had no _long/_int mismatches, but GC on Win64 will run between
creating an `_mpz' and using its value after passing it as an output argument
to MPFR functions. That doesn't seem to happen on 64-bit Linux or Mac. No
idea why, but Win64 exposed the problem so... that's good, I guess.

Rewrote `rational->bigfloat' to not use GMP's rationals

More/better bigfloat tests

Added bigfloat stress test w/ weak leak detection

Reenabled custodian shutdown callback that clears MPFR constants, because it
seems to work now

Removed `mpfr-available?' because it would only return non-#f
2012-12-03 22:45:31 -07:00
Neil Toronto
5a43f2c6bc Finished array documentation!
Cleaned up other docs in preparation for alpha-testing announcement

Created `math/utils' module for stuff that doesn't go anywhere else (e.g.
FFT scaling convention, max-math-threads parameters)

Reduced the number of macros that expand to applications of `array-map'

Added `flvector-sum', defined `flsum' in terms of it

Reduced the number of pointwise `flvector', `flarray' and `fcarray' operations

Reworked `inline-build-flvector' and `inline-flvector-map' to be faster and
expand to less code in both typed and untyped Racket

Redefined conversions like `list->flvector' in terms of for loops (can do
it now that TR has working `for/flvector:', etc.)
2012-11-29 15:45:17 -07:00
Neil Toronto
96d1400654 Renamed functions
* bernoulli -> bernoulli-number
 * farey -> farey-sequence
 * fibonacci/mod -> modular-fibonacci
 * order -> unit-group-order
 * orders -> unit-group-orders

Documented `make-fibonacci' and `make-modular-fibonacci'

Reworked text about loading external libraries in docs for `math/bigfloat'

Removed type aliases like Z, Q, Prime (I like them, but TR was printing them
in unexpected places like array return types)
2012-11-27 22:23:42 -07:00
Matthew Flatt
eaf68e6e85 GMP and MPFR as pre-build libraries for Mac OS X and Windows
Also, add versions for Unix references, and adjust the way that
missing bindings are handled.
2012-11-16 22:21:54 -07:00
Neil Toronto
f2dc2027f6 Initial math library commit. The history for these changes is preserved
in the original GitHub fork:

  https://github.com/ntoronto/racket

Some things about this are known to be broken (most egregious is that the
array tests DO NOT RUN because of a problem in typed/rackunit), about half
has no coverage in the tests, and half has no documentation. Fixes and
docs are coming. This is committed now to allow others to find errors and
inconsistency in the things that appear to be working, and to give the
author a (rather incomplete) sense of closure.
2012-11-16 11:39:51 -07:00