Differences

This shows you the differences between two versions of the page.

--- c:math.h:frexp [2013/01/22 22:02]
+++ c:math.h:frexp [2024/02/16 01:05] (current)
@@ Line 1: / Line 1: @@
+{{keywords>wiki library source code example reference}}
+===== frexp =====
+<code c>
+    double frexp(double);
+</code>
+Mantissa m. in *n is the exponent.
+===== C Sourcecode Example =====
+compile in linux with: gcc frexp.c -o frexp **-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 x;
+  int n;
+  x = 42.0;
+  printf ("%lf * 2^%d = %f\n", frexp (x , &n), n, x);
+  return 0;
+}
+</code>
+==== output ====
+   output:
+   user@host:~$ ./frexp
+.656250 * 2^0 = 42.000000

on the occasion of the current invasion of Russia in Ukraine