From: Cai Li <caili@...>
Date: 2004-09-12T18:50:41+09:00
Subject: Re: A simple NARRAY question

but your code will raise a segmentation fault.

>*(double*)(na_x0->ptr[i - 1]) = 1.0;

then i modified it ,and this one should work:

double *x0_ptr;
x0_ptr = (double *)na_x0->ptr;
for (...)
  x0_ptr[i-1] = 1.0;





Cai Li wrote:

>Thank you,it's just what i need
>
>
>Cai Li
>----- Original Message ----- 
>From: "Masahiro TANAKA" <masa@ir.isas.ac.jp>
>To: "ruby-talk ML" <ruby-talk@ruby-lang.org>; <caili@cdgwbn.com.cn>
>Sent: Sunday, September 12, 2004 1:50 PM
>Subject: Re: A simple NARRAY question
>
>a
>  
>
>>Hi,
>>
>>    
>>
>>>Problem:How can I put  data  into a NArray object
>>>
>>>my code looks like this:
>>>
>>>VALUE x0;
>>>x0 = na_make_object(5,2,array_shape,cNArray);/* array_shape is an array 
>>>containing {n,1} */
>>>GetNArray(x0,na_x0);
>>>for (i = 1; i <= array_shape[0]; i++)
>>>  na_x0->ptr[i - 1] = 1.0; 
>>>      
>>>
>>Here should be;
>>
>>    *(double*)(na_x0->ptr[i - 1]) = 1.0;
>>
>>    
>>
>>>Here,I have specified all the elements in na_x0 into 1.0,
>>>then how to put the latest value into x0?
>>>      
>>>
>>No such backport process is needed.
>>
>>Masahiro Tanaka
>>    
>>