[#4734] Possible regex bug? — hal9000@...
OK, I'm trying to match an optional comma followed by
13 messages
2000/09/01
[#4744] Piping in Ruby? — Stephen White <steve@...>
There's one construct I miss from shell scripts... The ability to pipe the
8 messages
2000/09/02
[#4766] Wiki — "Glen Stampoultzis" <trinexus@...>
21 messages
2000/09/04
[#4768] RE: Wiki
— "NAKAMURA, Hiroshi" <nahi@...>
2000/09/04
Hi, Glen,
[#4783] Re: Wiki
— Masatoshi SEKI <m_seki@...>
2000/09/04
[#4785] Re: Wiki
— "NAKAMURA, Hiroshi" <nakahiro@...>
2000/09/05
Howdy,
[#4787] Re: Wiki
— "Glen Stampoultzis" <trinexus@...>
2000/09/05
> I asked him/her. He/She opened the new site using tiki-1.0.4.
[#4799] Re: Wiki
— "NAKAMURA, Hiroshi" <nahi@...>
2000/09/06
Hi, Glen,
[#5892] RWiki 1.0 (Re: Re: Wiki)
— m_seki@...
2000/10/26
[#5897] Re: RWiki 1.0 (Re: Re: Wiki)
— "NAKAMURA, Hiroshi" <nakahiro@...>
2000/10/27
Howdy,
[#4769] unix 'time' in Ruby? — Robert Feldt <feldt@...>
10 messages
2000/09/04
[#4771] Re: unix 'time' in Ruby?
— matz@... (Yukihiro Matsumoto)
2000/09/04
Hi.
[#4774] Module vs. Class — Jilani Khaldi <jilanik@...>
Hi,
5 messages
2000/09/04
[#4776] Listing methods in a module — DaVinci <bombadil@...>
Hi all. I need a little help :)
4 messages
2000/09/04
[#4792] closures — Stuart Zakon <zakons@...>
Can somebody please explain what a closure is within the context of
5 messages
2000/09/05
[#4809] Some questions — Friedrich Dominicus <frido@...>
11 messages
2000/09/06
[#4849] FEATURE REQUEST: Fixnum bitfields — Wayne Scott <wscott@...>
12 messages
2000/09/11
[#4850] Re: FEATURE REQUEST: Fixnum bitfields
— matz@... (Yukihiro Matsumoto)
2000/09/11
Hi,
[#4883] Re-binding a block — Dave Thomas <Dave@...>
16 messages
2000/09/12
[#4916] Re: [TOY] FL — Andrew Hunt <andy@...>
> I still don't understand sorry.
1 message
2000/09/13
[#4930] Perl 6 rumblings -- RFC 225 (v1) Data: Superpositions — Conrad Schneiker <schneik@...>
Hi,
11 messages
2000/09/15
[#4936] Ruby Book Eng. translation editor's questions — Jon Babcock <jon@...>
20 messages
2000/09/16
[#4946] Re: Ruby Book Eng. translation editor's questions
— "Hal E. Fulton" <hal9000@...>
2000/09/16
Nobody cares about this but me,
[#4947] Re: Ruby Book Eng. translation editor's questions
— Jon Babcock <jon@...>
2000/09/16
Thanks very much for the input.
[#4958] Re: Ruby Book Eng. translation editor's questions
— SUGIHARA Hiroshi (SuHi or SugHimsi) <manamist@...>
2000/09/17
SugHimsi.
[#4959] Re: Ruby Book Eng. translation editor's questions
— Jon Babcock <jon@...>
2000/09/17
,
[#4951] What do I need to compile 1.4? — "Glen Stampoultzis" <trinexus@...>
Platform is Windows 98
9 messages
2000/09/17
[#4987] Ruby Book Ch 2 English -- arguments/parameters/options? — Jon Babcock <jon@...>
Once again, I must impose on your good graces.
5 messages
2000/09/18
[#4992] Re: Perl 6 rumblings -- RFC 225 (v1) Data: S uperpositions (fwd) — Aleksi Niemel<aleksi.niemela@...>
Michael dared to suggest, and was probably right:
3 messages
2000/09/18
[#5009] Re: Ruby Book Ch 2 English -- arguments/parameters/options? — "Dat Nguyen" <thucdat@...>
4 messages
2000/09/19
[#5011] Changes in 1.6.0 — matz@... (Yukihiro Matsumoto)
Hi,
5 messages
2000/09/19
[#5013] A QuantumSuperposition Proposal for Ruby — Huayin Wang <wang@...>
# I have been play around the QuantumSuperpositions idea today and
5 messages
2000/09/19
[#5028] A Tru64 problem and ruby-talkietiquette — Aleksi Niemel<aleksi.niemela@...>
I just saw this (the little I could see in English)
5 messages
2000/09/20
[#5033] Having problems with Net::HTTP::do_finish — Dan Schmidt <dfan@...>
I just started using Ruby yesterday, and I'm having trouble with my
4 messages
2000/09/20
[#5045] Proposal: Add constants to Math — Robert Feldt <feldt@...>
15 messages
2000/09/21
[#5069] Re: Proposal: Add constants to Math
— matz@... (Yukihiro Matsumoto)
2000/09/22
Hi,
[#5088] Re: Proposal: Add constants to Math
— Robert Feldt <feldt@...>
2000/09/24
On Sat, 23 Sep 2000, Yukihiro Matsumoto wrote:
[#5051] Re: Proposal: Add constants to Math
— Masahiro Tanaka <masa@...>
2000/09/21
Hi,
[#5057] Re: Proposal: Add constants to Math
— Robert Feldt <feldt@...>
2000/09/22
On Fri, 22 Sep 2000, Masahiro Tanaka wrote:
[#5066] Re: Proposal: Add constants to Math
— Masahiro Tanaka <masa@...>
2000/09/22
>From: Robert Feldt <feldt@ce.chalmers.se>
[#5061] Proposal: Add rubycpp.h or include in ruby.h — Robert Feldt <feldt@...>
1 message
2000/09/22
[#5070] Ruby Book 2.18, Eng.tl, kesaran pasaran? — Jon Babcock <jon@...>
From Ruby Book 2.18:
4 messages
2000/09/22
[#5077] Crazy idea? infix method calls — hal9000@...
This is a generalization of the "in" operator idea which I
17 messages
2000/09/22
[#5082] Application Error in 1.6.0 on Win2K — "Kevin Burge" <kcbspam@...>
I've created a 1.6.0 ruby extension (1.6.0 (2000-09-19) [i586-mswin32]),
4 messages
2000/09/23
[#5092] RE: Hanging require — Aleksi Niemel<aleksi.niemela@...>
> ruby -v a.rb
2 messages
2000/09/24
[#5114] Types and === — hal9000@...
<sigh> I imagine Yoda behind me, shaking his little green head
12 messages
2000/09/25
[#5157] Compile Problem with 1.6.1 — Scott Billings <aerogems@...>
When I try to compile Ruby 1.6.1, I get the following error:
15 messages
2000/09/27
[#5161] Re: Types and === — schneik@...
6 messages
2000/09/27
[#5175] Compiling 1.6.1 problem — Tony Reed <Callus@...>
Compiling Ruby 1.6.1 fails:
11 messages
2000/09/28
[#5180] Re: Compiling 1.6.1 problem
— matz@... (Yukihiro Matsumoto)
2000/09/29
Hi,
[#5190] Re: Compiling 1.6.1 problem
— Tony Reed <Callus@...>
2000/09/29
On 9/29/00, Yukihiro Matsumoto wrote:
[#5191] Re: Compiling 1.6.1 problem
— Yasushi Shoji <yashi@...>
2000/09/29
From: Tony Reed <Callus@Sympatico.CA>
[ruby-talk:5156] Re: Proposal: Add constants to Math
From:
Robert Feldt <feldt@...>
Date:
2000-09-27 14:33:57 UTC
List:
ruby-talk #5156
Hi,
Here's some really ugly/brutal code that seems to do the trick (with
NaN, Inf and -Inf). I've successfully tested on both a big and a small
endian machine. Would be great if you could test it on your
machine/setup. Extract 3 files below or get tiny tarball at:
www.ce.chalmers.se/~feldt/ruby/extensions/floatconsts/floatconsts.tar.gz
Matz: Feel free to rip the code and insert constants into Float (or where
you think they fit)... ;-)
Regards,
Robert
Ps. Please read header comment in floatconsts.c in the tarball if you need
more info...
------------------------floatconsts.c
#include <ruby.h>
#include <math.h>
void Init_floatconsts()
{
static unsigned char nan_small_endian_bytes[8] =
{0x7f, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
static unsigned char inf_small_endian_bytes[8] =
{0x7f, 0xf0, 0, 0, 0, 0, 0, 0};
static unsigned char neginf_small_endian_bytes[8] =
{0xff, 0xf0, 0, 0, 0, 0, 0, 0};
static unsigned char nan_big_endian_bytes[8] =
{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x7f};
static unsigned char inf_big_endian_bytes[8] =
{0, 0, 0, 0, 0, 0, 0xf0, 0x7f};
static unsigned char neginf_big_endian_bytes[8] =
{0, 0, 0, 0, 0, 0, 0xf0, 0xff};
double nan, inf, neginf;
static int i = 1;
// Try the IEEE 754 floating point standard ways
nan = 0.0/0.0;
inf = 1.0/0.0;
neginf = -1.0/0.0;
// If at least one didn't work we try the brutal way!
if( !isnan(nan) || !isinf(inf) || !isinf(neginf) ) {
// Test endianness
if( 1 == *((char*)&i) ) {
// Big endian
nan = *((double*)nan_big_endian_bytes);
inf = *((double*)inf_big_endian_bytes);
neginf = *((double*)neginf_big_endian_bytes);
} else {
// Small endian
nan = *((double*)nan_small_endian_bytes);
inf = *((double*)inf_small_endian_bytes);
neginf = *((double*)neginf_small_endian_bytes);
}
}
// If even this failed we return without setting them up
if( !isnan(nan) || !isinf(inf) || !isinf(neginf) ) {
printf("Error: Could not add constants\n");
return;
}
// Set up constants
rb_define_const(rb_cFloat, "NAN", rb_float_new(nan));
rb_define_const(rb_cFloat, "INF", rb_float_new(inf));
rb_define_const(rb_cFloat, "NEGINF", rb_float_new(neginf));
}
-----------------extconf.rb
require "mkmf"
$objs = ["floatconsts.o"]
create_makefile("floatconsts")
-----------------test_floatconsts.rb
require 'floatconsts'
if (Float::NAN != nil) and (Float::NAN.nan?) and
(Float::INF != nil) and (Float::INF.infinite? == 1) and
(Float::NEGINF != nil) and (Float::NEGINF.infinite? == -1)
puts "Test successfull!"
else
puts "ERROR: Test failed!"
end