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Author SHA1 Message Date
nobu
c995315153 math.c: adjust cbrt
* math.c (math_cbrt): refine the approximation result on boundary
  values by an iteration of Newton-Raphson method.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@63592 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2018-06-06 14:01:43 +00:00
nobu
61a85f91a2 math.c: calling order
* math.c (math_log, rb_math_log): inverted calling order, to
  remove unused argument.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@62704 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2018-03-09 03:57:34 +00:00
shyouhei
3ca0948f68 INFINITY is float. That of double is HUGE_VAL.
It seems HUGE_VAL is already used. Why not eliminate INTINITY.
NAN is also float. That of double is called nan(). This is also
fixed.

Signed-off-by: Urabe, Shyouhei <shyouhei@ruby-lang.org>

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@61938 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2018-01-19 01:45:36 +00:00
nobu
d3ca0b29a6 math.c: check argument to lgamma_r
* math.c (math_lgamma): check the argument before calling math
  function `lgamma_r` for edge cases.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@58698 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2017-05-13 01:05:30 +00:00
nobu
1a4a536247 math.c: check argument to tgamma
* math.c (math_gamma): check the argument before calling math
  function `tgamma` for edge cases.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@58697 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2017-05-13 00:50:20 +00:00
nobu
126aba8587 fix tgamma for inifity
* configure.in: do not use buggy tgamma() of mingw.

* missing/tgamma.c (tgamma): merge fix for inifity from
  ruby_tgamma.  since msvcr120.dll and later have tgamma, this
  implementation will not be used.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@58691 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2017-05-12 16:12:46 +00:00
usa
0c16051114 Math.gamma(Float::INFINITY) should return +INF
* math.c (tgamma): it seems that the implementaion of mswin has similar problem
  with mingw.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@58685 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2017-05-12 10:31:52 +00:00
nobu
7573452099 math.c (ruby_lgamma_r): reduce duplicate code
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@58645 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2017-05-10 00:20:02 +00:00
stomar
4b5a2b5272 math.c: improve docs for Math.sqrt
* math.c: [DOC] mention Integer.sqrt in docs for Math.sqrt.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@58582 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2017-05-06 07:28:40 +00:00
stomar
9638295527 math.c: improve docs for Math.sqrt
* math.c: [DOC] mention possibly surprising behavior of Math.sqrt
  due to floating point arithmetic; also refer to BigDecimal#sqrt.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@58291 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2017-04-09 13:30:31 +00:00
nobu
01fb669423 math.c: more accuracy
* math.c (math_log10): calculate log10(2) for more accuracy.
  [ruby-core:79907] [Bug ]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@57779 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2017-03-05 01:46:20 +00:00
nobu
378d0e6aca math.c: unused_obj
* math.c (exp1, exp2): use immediate 0 instead of rb_mMath, which
  is never used.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@56833 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2016-11-19 01:55:34 +00:00
mrkn
558c362f60 math.c: remove needless ifdef clause
* math.c (ifdef M_PI): M_PI is eventually defined in missing.h even if math.h
  doesn't supply it.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@56810 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2016-11-16 04:25:37 +00:00
nobu
4e44f6ef86 [DOC] replace Fixnum with Integer [ci skip]
* numeric.c: [DOC] update document for Integer class.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@56492 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2016-10-26 06:11:23 +00:00
nobu
4483d59fbd math.c: faster tanh
* math.c (tanh): make faster by the extract form if three
  hyperbolic functions are unavailable.  [Feature ]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@55799 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2016-08-02 12:42:42 +00:00
nobu
83cfc94563 math.c: tanh overflow
* math.c (tanh): check overflows, and return +-1.0.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@55798 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2016-08-02 12:40:51 +00:00
usa
d42e547ab1 * math.c (_USE_MATH_DEFINES): it must be set before including internal.h
because internal.h includes ruby.h, ruby.h includes win32.h, and
  win32.h includes system's math.h.
  this change is to get rid of a compiler warning (redefinition of
  a macro) introduced at r55641.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@55662 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2016-07-13 07:03:23 +00:00
naruse
7b653bd019 fix type
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@55659 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2016-07-13 05:47:48 +00:00
naruse
7b59234aaf * math.c (rb_math_sqrt): r55646 must use f_signbit.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@55657 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2016-07-13 05:29:30 +00:00
nobu
745a2aac69 math.c: Complex sqrt
* math.c (rb_math_sqrt): [EXPERIMENTAL] move Complex sqrt support
  from mathn.rb.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@55646 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2016-07-12 14:13:46 +00:00
nobu
92b98a982b math.c: get_double_rshift
* math.c (get_double_rshift): extract bignum to double conversion
  with bit offset.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@55644 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2016-07-12 13:07:51 +00:00
nobu
fd2c613b1c math.c: use common constants
* math.c (math_log1, math_log10): use common math constants
  instead of math function calls.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@55641 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2016-07-12 11:53:43 +00:00
odaira
7a3f794da0 * configure.in (rb_cv_lgamma_r_pm0): check if lgamma_r(+0.0)
returns positive infinity, in addition to lgamma_r(-0.0).
  AIX returns an incorrect result of negative infinity.

* math.c (ruby_lgamma_r): handle +0.0, in addition to -0.0.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@54803 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2016-04-27 20:00:57 +00:00
nobu
ea736d55f9 configure.in: check lgamma_r(-0.0)
* configure.in (rb_cv_lgamma_r_m0): check if lgamma_r(-0.0)
  returns negative infinity.  [Bug ]
* math.c (ruby_lgamma_r): define by the configured result.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@54499 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2016-04-06 05:13:29 +00:00
nobu
39330d6b79 lgamma_r.c: fix at -0.0
* math.c (ruby_lgamma_r): missing/lgamma_r.c is used on Windows,
  since msvcrt does not provide it.
* missing/lgamma_r.c (lgamma_r): fix lgamma(-0.0).
  [ruby-core:74823] [Bug ]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@54496 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2016-04-06 01:17:55 +00:00
usa
bb7a4c2a00 * math.c (ruby_lgamma_r): mswin's lgamma_r also seems to be wrong.
cf. [Bug ]


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@54495 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2016-04-05 16:23:39 +00:00
nobu
542d3a071f math.c: fix lgamma
* math.c (ruby_lgamma_r): fix lgamma(-0.0) on mingw and OSX.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@54494 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2016-04-05 15:53:32 +00:00
nobu
41c533446f math.c: fix tgamma
* math.c (ruby_tgamma): fix tgamma(-0.0) on mingw.
  [ruby-core:74817] [Bug ]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@54492 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2016-04-05 15:52:02 +00:00
nobu
f830ace8a8 object.c: rb_num_to_dbl
* object.c (rb_num_to_dbl): move from num2dbl_with_to_f in math.c.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@51563 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2015-08-13 05:36:33 +00:00
nobu
42e36319bd ruby/missing.h: M_PI fallback definition
* include/ruby/missing.h (M_PI, M_PI_2): fallback definitions for
  VC6.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@51313 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2015-07-21 10:51:40 +00:00
gogotanaka
dc37d6daba * math.c (math_log1, math_log2, math_log10): refactoring
and tests for this.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@49979 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2015-03-16 08:39:29 +00:00
gogotanaka
ef8537bc9e * math.c (math_cbrt): [DOC] Fix domain and codomain.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@49973 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2015-03-15 11:49:30 +00:00
nobu
573772ab5b math.c: more robust
* math.c (math_gamma): make more robust against addition/removal.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@49972 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2015-03-14 23:34:39 +00:00
gogotanaka
717bc13d29 * math.c (math_gamma): rename NGAMMA_TABLE to NFACT_TABLE.
specify the size of the fact_table.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@49970 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2015-03-14 17:37:38 +00:00
gogotanaka
09d9d913c0 * math.c (math_gamma): explicit cast to double.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@49969 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2015-03-14 11:16:05 +00:00
gogotanaka
0e749ddedc * math.c (math_gamma): optimization for passed small integer.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@49968 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2015-03-14 11:07:49 +00:00
nobu
3f6fb5f72a math.c: fix tgamma on mingw
* math.c (mingw_tgamma): tgamma(3) on mingw returns a NaN for a
  big number, not infinity.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@49913 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2015-03-10 04:53:46 +00:00
gogotanaka
55473aea5c * math.c: refactoring: remove unnecessary variable d0 to unify code
appearance.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@49852 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2015-03-05 03:29:37 +00:00
gogotanaka
972713cee1 * math.c (num2dbl_with_to_f): direct casting from Rational to double.
[Feature ]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@49818 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2015-03-03 05:59:28 +00:00
nobu
df445b470e math.c: optimization for Bignum
* math.c (num2dbl_with_to_f): make faster when Bignum passed by
  direct conversion using rb_big2dbl().  [Feature ]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@49449 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2015-01-30 08:28:32 +00:00
nobu
a1f8fbd18d math.c: deoptimize
* math.c (Get_Double): restrict direct casting only when
  Fixnum#to_f is not redefined, and convert with rb_to_float().
  [Feature ]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@49434 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2015-01-29 01:42:12 +00:00
nobu
d77ae2c2f4 math.c: Get_Double
* math.c (Get_Double): direct casting from Fixnum to double.
  [Feature ]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@49433 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2015-01-29 01:41:54 +00:00
hsbt
2d47bf629f * math.c (math_atan2): revive documentation before r49220.
http://d.hatena.ne.jp/nagachika/20150112/ruby_trunk_changes_49213_49226

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@49325 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2015-01-18 09:32:26 +00:00
hsbt
2f56ebe8f7 * math.c (math_atan2): improve documentation.
[Feature ][ruby-core:65400][ci skip]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@49220 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2015-01-12 04:53:23 +00:00
akr
7cd76ab0c5 * internal.h: Include ruby.h and ruby/encoding.h to be
includable without prior inclusion.



git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@48447 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2014-11-15 11:49:06 +00:00
nobu
e99ee55abc constify parameters
* include/ruby/intern.h: constify `argv` parameters.

* include/ruby/ruby.h: ditto.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@46459 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2014-06-18 06:16:39 +00:00
nobu
f0fc13aaea configure.in: check atan2
* configure.in (rb_cv_atan2_inf_c99): check whether runtime atan2
  handles Inf as C99.  ruby-core:62536] [Bug ]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@45930 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2014-05-12 14:57:17 +00:00
tadf
a210f7c225 * math.c (rb_math_sqrt): omitted exporting an unused function,
anyway.
	* internal.h: follows the above change.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@45825 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2014-05-05 08:28:56 +00:00
nobu
d64eef156f * math.c (math_atan2): remove the condition for test.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@45806 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2014-05-04 02:41:35 +00:00
nobu
7a6ebecf9e math.c: C99-like atan2
* math.c (math_atan2): return values like as expected by C99 if
  both two arguments are infinity.  based on the patch by cremno
  phobia <cremno AT mail.ru> in [ruby-core:62310].  [Feature ]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@45805 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2014-05-04 01:23:01 +00:00