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c:stdlib.h:labs

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c:stdlib.h:labs [2013/01/22 22:02] (current)
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 +{{keywords>wiki library source code example reference}}
 +====== labs ======
 +
 +<code c>
 +    #include <stdlib.h>
 +    long int labs(long int x);
 +</code>
 +
 +computes the absolute value of a long integer\\
 +\\
 +returns the absolute value of a number\\
 +the case of a negative number the sign is reversed, a positive number is returned unchanged.\\
 +labs is functionally equivalent to abs (), but uses the data type long int\\
 +    
 +===== C Sourcecode Example =====
 +<code c>
 +#include <stdio.h> /* including standard library */
 +//#include <windows.h> /* uncomment this for Windows */
 + /* for printf */
 +#include <stdlib.h>
 + 
 +int main( void )
 +{
 +  long int i = -42;
 +  printf("labs from i = %li\n", labs(i));
 +  return 0;
 +}
 +
 +</code>
 +
 +==== output with abort: ====
 +    user@host:~/code-reference.com# ./labs 
 +    labs from i = 42
 +
  
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c/stdlib.h/labs.txt · Last modified: 2013/01/22 22:02 (external edit)

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