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c:math.h:ldexp

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c:math.h:ldexp [2013/01/22 22:02] (current)
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 +{{keywords>wiki library source code example reference}}
 +===== ldexp =====
 +<code c>
 +    double ldexp(double , int exp);
 +</code>
 +Returns x times 2 raised to n
 +
 +
 +===== C Sourcecode Example =====
 +compile in linux with: gcc ldexp.c -o ldexp **-lm** -Wall
 +<code c>     
 +#include <stdio.h> /* including standard library */
 +//#include <windows.h> /* uncomment this for Windows */
 +
 +#include <math.h> /* including math library */
 +
 +int main ( void ) 
 +{
 +
 +  printf ("4.2 raised to 2 is %f\n", ldexp(4.2, 2));
 +  return 0;
 +}
 +
 +
 +
 +</code>
 +
 +==== output ====
 +   output:
 +   user@host:~$ ./ldexp 
 +   4.2 raised to 2 is 16.8000
  
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c/math.h/ldexp.txt · Last modified: 2013/01/22 22:02 (external edit)

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