I'm learning C and trying to write a program to convert gigabyte into byte. It will take 50% of the value given and then convert that value into byte. But the problem is the output goes into minus / negative value. Like, if I enter 22, I get output: -2147483648.
Code:
#include <stdio.h>
#include <math.h>
main (int argc, char* argv[])
{
[Code]....
I need to convert an integer to a byte array of size 2 and vice versa. The code shown below works well for positive values but not for negative values. Also, using an array of size four makes the conversion works. However, I am limited to an array of size 2.
View 5 Replies View RelatedI got across a peculiar problem with memcpy.History:writing a code which do flash/Read functionality for SPI Parts.
Implementation:
1.memory map the Flash chip registers to userspace. - fine
2.Issue block read command
3.Just print the data I got, using the memory mapped address - fine I got the correct data.
4.Copy the data to a local buffer from memory mapped address using memcpy - FAIL
UPDATE:
on SUSE 11.3 -32 bit the above code worked perfectly, but on SUSE 11.4 - 64bit , Ubantu, Fedora it failed.
I am using gcc compiler obviously. I am using i386/x86_64 OS. Processor: Intel core 2 duo, SNB after step 4 , when I dump the data from local buffer every thing is FF.But step 4, if i implement byte by byte copy using assignment operator, it worked.is there any known bug with memcpy? am I missing anything?
As 2.17
I want to code this:
and byte[45],03
In words, AND the byte at memory location 45 with immediate value 03. As reports "Ambiguous operand size for and". How could I code the instruction such that as understands my intention?
john: .byte 45
and byte[john],03
gives the same error.
E.g. 98 is represented as 1100010 (number of valid bits is 7)
What is the formula to calculate the number of valid bits in a byte ?
I'm trying to write an extension to PHP which means coding in C. I'm really really rusty at C coding and was never very good at it.
Can anyone propose an efficient, safe, and [hopefully] future-proof way of reversing a double? Keep in mind that it should work on as many systems as possible and on 32- and 64-bit systems (and on ???-bit systems in the future?). Will the size of a 'double' ever change or will it always be 8 bytes?
I've tried this and it doesn't work...the compiler complains about "invalid operands to binary" because I'm trying bitwise shiftw on a non-integer.
Code:
x = (x>>56) |
((x<<40) & 0x00FF000000000000) |
((x<<24) & 0x0000FF0000000000) |
((x<<8) & 0x000000FF00000000) |
[Code]....
I am trying to learn assembly using nasm as assembler. I did not found example related to string operation. I had following example code,
global asm_strlen
section .data
section .bss
section .text
[code].....
my problem is at highlighted line, I am not getting how to copy a byte into 4 byte reg. rather what is syntax of mov instruction to mov byte to WORD DWORD etc.
Assuming there are two list objects a1, a2.
a1 = ['
']
a2 =['hi
']
len() built-in function gives total number of elements in the list object.
len(a1) gives 1. len(a2) gives 1 also.
Code: Select all$ python
Python 2.7.3 (default, Sep 9 2012, 17:41:34)
[GCC 4.7.1] on linux2
[Code]......
I thought there exists a built-in function that gives total size of a list object in byte. So using the function produces 1 for a1, 3 for a2. I haven't found such function or module yet.
I wrote a serial port communication program to access a equipment.
int main(void)
{
int fd = 0;
int nread = 0,i = 0,nwrite = 0, tmpread = 0, m = 0, n = 0 ;
[code]....
Do I have the convert the int to a string using stringstream then convert the string to a char? or is there a more direct way?Also is there a way to tell the length of a int?
View 5 Replies View RelatedI want to load data into mysql database,I am having a xls file want to convert it into csv file to do it.I am running the script on apache server,was able to convert and I could see the output file,when I execute the php script in command line,but when I run it on the browser the file is not saved..??? .Whether something has to be configured on apache
View 1 Replies View RelatedI have an existing line of code from a P2 script that I cannot find a solution to converting to P3:
Code:
for i, x in map(None, list1, list2):
I have found the information about converting the simple case:
map(None,x) becomes list(x)
But my googling was unable to find a solution when more than one iterable exists.
Iam trying to check a value less than or equals 0.The value iam getting is after doing grep a file . but its throwing error .
Code:
When i execute this it throws
Code:
I am trying to write a kernel module which is the combination of the usb driver and a network driver, now whenever the data is recieved by the usb driver it will be in struct urb, but the data that is required by the net driver is sk_buff, now how do i convert a urb to sk_buff, i found something similar is being done in the phonet protocol, but i couldnt understand, howexactly this is being done. Can someone explain this code.
drivers/net/usb/cdc-phonet.c
Code:
static void rx_complete(struct urb *req)
{
struct net_device *dev = req->context;
struct usbpn_dev *pnd = netdev_priv(dev);
[Code]....
I have the source code for the dll file, and I want to convert it to .so file.the dll file has declared some functions like this in the .c file
declspec (dllexport) etc.
I want to use this program in linux(open suse). How to do it? Is it through Wine? Then how to do it exactly.
I've searched around and can't find out how to convert a string ( like "12345" ) into an int array ( x[ 5 ] = { 1, 2, 3, 4, 5 } ; ).
View 4 Replies View RelatedI wrote a bash script a few months ago and now I want to convert it to a C program. However, i used awk a lot in my script, and I don't know what to use in place of awk. The awk calls are simple, like string splitting and math, but I don't know of any replacement for the string splitting function. Are there any C libraries that include some sort of string splitting function?
View 4 Replies View RelatedI need to convert some .flac files into .mp3.
I found this script:
#!/bin/bash
FLAC=$1
MP3="${FLAC%.flac}.mp3"
[ -r "$FLAC" ] || { echo can not read file "$FLAC" >&1 ; exit 1 ; } ;
metaflac --export-tags-to=- "$FLAC" | sed 's/=(.*)/="1"/' >tmp.tmp
[Code].....
And I need it to run it from outside of a directory for several directories.
I need to run it from /dir for /dir/dire*
Im new to linux Iam pursuing bachelors in computer science engineering.... my final year project is to develop a "html to pdf converter using linux"... i have some basic knowledge of commands used in unix
1) Where can i get the basic idea about the existing converters... their pros and cons...
.... programming...
2) Any kind of material or source where i can get basic idea of programming used for converting html pages that are linked into a single pdf..
I bet this is a Perl one-liner (or very simple python script).I have a tab separated files in which each row looks like:Unique_Eight_Character_Sequence [3 tabs] data1~moredata1~moredata1 [3 tabs] data2~ moredata2~ moredata2 ... dataN~.The output file should have each column converted into a row (with the unique character sequence copied in for the first column), and then each "~" replaced by a comma.
View 14 Replies View RelatedHow does one convert from DD/MM/YYYY to YYYYMMDD?
Code:
06/06/2011
06/06/2011
to
Code:
20110606
20110606
convert string to long ?
View 4 Replies View Relatedi was able to use XGetImage to get an image from desktop on my Linux, not the problem is that, can i use this output XImage and convert it to png? or even save this XImage to file and load it to XImage again later?
View 3 Replies View RelatedSomeone know how i can convert from hex string to double in c/c++?? Example 40668472B020C49C is 180.139
reference page: http://babbage.cs.qc.edu/IEEE-754/64bit.html
main()
{
unsigned long long tsc_start, tsc_end;
tsc_start = get_tsc();
// execute some code
[code]....
Can anyone please suggest me how can we convert a wide char data in linux which is of 32 bit to a 16bit data. I have a file which has 16bit binary data? Could any one please give me ideas.
View 2 Replies View RelatedCode:
FILE_SIZE=`find /var/logs/ -type f -mtime +5 | wc -c`
im trying to convert FILE_SIZE into megabytes
[code]....
I'm trying to migrate my company server to linux, but i have a program that is designed in access what is the best way to move access tables to a mysql database so that i can program it in PHP?
View 3 Replies View RelatedI have a script that creates a textfile with ip addresses and ports, but the ports are in hex format so they need to be converted.
Currently I have this code:
Code:
I'd like to have the second column in decimal instead of hex, like this:
Code:
Is there any way to do that with awk, preferably in a oneliner? Would printf be an option?
i have problem in java. how to convert string array to character. e.g string a[]={"ab","abc","abd","ag"}; what will be the character array ?
View 3 Replies View Related