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c:math.h:floor

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c:math.h:floor [2013/01/22 22:02] (current)
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 +{{keywords>wiki library source code example reference}}
 +===== floor =====
 +<code c>
 +    double floor(double);
 +</code>
 +rounding down a number
  
 +===== C Sourcecode Example =====
 +compile in linux with: gcc floor.c -o floor **-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 ) 
 +{
 +double y,x;
 +x = 4.2;
 +y = 9.9;
 +printf("floor of %f is %f\n", x, floor(x) );
 +printf("floor of %f is %f\n ",y , floor(y) );
 +return 0;
 +}
 +
 +</code>
 +
 +==== output ====
 +   output:
 +   user@host:~$ ./floor 
 +   floor of 4.200000 is 4.000000
 +   floor of 9.900000 is 9.000000
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c/math.h/floor.txt · Last modified: 2013/01/22 22:02 (external edit)

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