From: Soenke_Ufen AT kruemel DOT org (Soenke Ufen)
Newsgroups: comp.os.msdos.djgpp
Subject: Re: Looking at the individual bits of a float.
Date: Thu, 9 Nov 2000 12:10:00 CET
Organization: Krmel Boks!
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To: djgpp AT delorie DOT com
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Reply-To: djgpp AT delorie DOT com

Hi Graham,

g>I was wondering if anyone has any fast ways of looking at the
g>individual bits and bytes of a float with or without (preferably)
g>destroying the float in question.

  #include "pls_excuse_wrong_NG.h"

  #include <stdio.h>
  #include <limits.h> /* CHAR_BIT */

  int main()
  {
      float x;
      char *b;
      int i, j;

      scanf("%f", &x);
      b = (char *) &x;
      for (i = 0; i < sizeof(float); i++) {
        for (j = CHAR_BIT - 1; j >= 0; j--) {
            if (b[i] & (1 << j))
                printf("1");
            else
                printf("0");
        }
      }
      printf("\n");
  }/* Optimization depends on implementation ;-) */

--
Bye,
        Sönke.