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!
Lines:	34
Sender:	Soenke_Ufen AT kboks DOT kruemel DOT org
Message-ID:	<MSGID_2=3A240=2F2188.47=40fidonet_fa4456fc@fidonet.org>
References:	<6fqO5.60817$mv2 DOT 276178 AT news2-win DOT server DOT ntlworld DOT com>
NNTP-Posting-Host:	pd4b9de86.dip.t-dialin.net (212.185.222.134)
Mime-Version:	1.0
X-Trace:	fu-berlin.de 973769414 1660173 212.185.222.134 (16 [23622])
User-Agent:	VSoup v1.2.9.48Beta [OS/2]
To:	djgpp AT delorie DOT com
DJ-Gateway:	from newsgroup comp.os.msdos.djgpp
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.

- Raw text -