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--- c:math.h:floor [2013/01/22 22:02]
+++ c:math.h:floor [2024/02/16 01:05] (current)
@@ Line 1: / Line 1: @@
+{{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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