数组的大小太大 [英] Size of array too large
问题描述
你好
我正在写一个小程序来寻找一些特定的整数集
（同音集），以及每一组是一个未签名的长期
（例如{1,2,4,7} --1001011 = 75）。我需要一个很长的
这类套装清单，所以我宣布了一个
#define MAXS = 397148160
static unsigned long long set [MAXS];
但MAXS对我的编译器来说似乎有点太大了（我正在使用Xcode
on一个Mac Book Pro，2.5GHz），它返回一个数组大小太大
错误。
有没有办法解决这个问题很长一段时间
unsigned long long？
非常感谢
Daniele Ghisi
Hello
I''m writing a small programme to look for some particular integer sets
(homometric sets), and each one of this sets is a unsigned long long
(e.g. {1, 2, 4, 7} --1001011=75). I need to have a very long list of
sets of this kind, so I declared a
#define MAXS = 397148160
static unsigned long long set[MAXS];
but MAXS seems to be a bit too large for my compiler (I''m using Xcode
on a Mac Book Pro, 2.5GHz), that returns a "size of array too large"
error.
Is there a way to solve this problem and have a very long array of
unsigned long long?
Thank you very much
Daniele Ghisi
推荐答案
da ********* *@gmail.com 写道：
你好
我正在编写一个小程序来查看对于某些特定的整数集
（同音集），并且这些集合中的每一个都是无符号长长的
（例如{1,2,4,7} - 1001011 = 75）。我需要一个很长的
这类套装清单，所以我宣布了一个
#define MAXS = 397148160
static unsigned long long set [MAXS];
但MAXS对我的编译器来说似乎有点太大了（我正在使用Xcode
on一个Mac Book Pro，2.5GHz），它返回一个数组大小太大
错误。
有没有办法解决这个问题并且有一长串
unsigned long long？
Hello
I''m writing a small programme to look for some particular integer sets
(homometric sets), and each one of this sets is a unsigned long long
(e.g. {1, 2, 4, 7} --1001011=75). I need to have a very long list of
sets of this kind, so I declared a
#define MAXS = 397148160
static unsigned long long set[MAXS];
but MAXS seems to be a bit too large for my compiler (I''m using Xcode
on a Mac Book Pro, 2.5GHz), that returns a "size of array too large"
error.
Is there a way to solve this problem and have a very long array of
unsigned long long?
使用动态分配（malloc）。
你的阵列将是巨大的，超过3GB，所以你最好有足够的内存！
-
Ian Collins。
Use dynamic allocation (malloc).
Your array will be huge, over 3GB, so you better have plenty of RAM!
--
Ian Collins.
da**********@gmail.com 写在
news：945ff496-791e-44b5-90c9-6fed76ffc5e8
@ k37g2000hsf.googlegroups.co
m：
da**********@gmail.com wrote in
news:945ff496-791e-44b5-90c9-6fed76ffc5e8
@k37g2000hsf.googlegroups.co
m:
你好
我正在写一个小专业人士用来寻找一些特定的整数
集（同音集），这些集合中的每一个都是无符号长的
长（例如{1,2,4,7} --1001011 = 75）。我需要一个
很长的这类套装清单，所以我宣布了一个
#define MAXS = 397148160
static unsigned long long set [MAXS];
但MAXS对于我的编译器来说似乎有点太大了（我正在使用
Xcode on一个Mac Book Pro，2.5GHz），它返回一个大小的数组
太大。错误。
有没有办法解决这个问题并且有一个很长的数组
unsigned long long？
Hello
I''m writing a small programme to look for some particular integer
sets (homometric sets), and each one of this sets is a unsigned
long long (e.g. {1, 2, 4, 7} --1001011=75). I need to have a
very long list of sets of this kind, so I declared a
#define MAXS = 397148160
static unsigned long long set[MAXS];
but MAXS seems to be a bit too large for my compiler (I''m using
Xcode on a Mac Book Pro, 2.5GHz), that returns a "size of array
too large" error.
Is there a way to solve this problem and have a very long array of
unsigned long long?
我假设long long是64位。所以，如果我的算术是正确的，
我们正在谈论这个数组的大约3 Gb内存。
我认为是时候重新考虑算法。
思南
-
A. Sinan Unur< 1u ** @ llenroc.ude .invalid>
（删除.invalid并反转每个组件的电子邮件地址）
I am assuming long long is 64 bits. So, if my arithmetic is correct,
we are talking about approx 3 Gb memory just for this array.
Methinks it''s time to rethink the algorithm.
Sinan
--
A. Sinan Unur <1u**@llenroc.ude.invalid>
(remove .invalid and reverse each component for email address)
在文章< 94 ******* ********* @ k37g2000hsf。 googlegroups.com>，
< da ********** @ gmail.comwrote：
In article <94**********************************@k37g2000hsf. googlegroups.com>,
<da**********@gmail.comwrote:
>＃ define MAXS = 397148160
static unsigned long long set [MAXS];
>#define MAXS = 397148160
static unsigned long long set[MAXS];
如果long long是64位（它在你的Mac上），这需要超过
3GB的内存。如果你在32位模式下编译，这比系统可以处理的
更大。 （32位指针的地址空间是4GB，
但我认为你在Mac上不能超过2GB。）使用malloc（）
代替没有帮助。
它*应*用于构建它作为64位程序 - 也就是说，一个
使用64位指针。 Mac上的标志是-m64。但是，
它似乎仍然无法处理它：显然大小为bss的大小。 region存储为32位数字。如果你使用malloc（）
内存而不是它应该使用-m64。
- Richard
-
：wq
If long long is 64 bits (which it is on your Mac), this requires over
3GB of memory. If you compile in 32-bit mode, this is bigger than
the system can handle. (The address space for 32-bit pointers is 4GB,
but I think you can''t have more than 2GB on the Mac.) Using malloc()
instead won''t help.
It *should* work to build it as a 64-bit program - that is, one that
uses 64-bit pointers. The flag for this on the Mac is -m64. However,
it still doesn''t seem to be able to handle it: apparently the size of
the "bss" region is stored as a 32-bit number. If you malloc() the
memory instead it should work with -m64.
-- Richard
--
:wq
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