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Asked: 2026-06-07T22:53:54+00:00

I want to use atoi function in my program, but I found it not

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I want to use atoi function in my program, but I found it not working.

#include <ctype.h>
int value;
value=atoi(buf);

char buf points to “1000” or something like, terminated by \0. I have checked it.
But the value evaluates always to zero. I have tried strtol(), but I get the same error.

  1. My ADS (ARM Developer Suit) is v1.2 (s3c2440). I can find the libs in armlib path (c_t_xx.l).
  2. I use axd debug mode, so I can trace my code. I found "bl
    __rt_ctype_table"    , so I think asm code linked right.

Please give any advice to fix this issue.

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1 Answer

  1. Editorial Team

    ARM might have a problem with string functions, you haven’t mentioned whether it returns a value and it’s incorrect (i heard it’s a bug and it’s better you should write the function on your own) or there is no value at all.
    anyway look at the arm article about it i think it’s the solution – ARM article about string functions

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