osprey/libI77/fmtlib.c

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/*

  Copyright (C) 2000, 2001 Silicon Graphics, Inc.  All Rights Reserved.

  This program is free software; you can redistribute it and/or modify it
  under the terms of version 2.1 of the GNU Lesser General Public License 
  as published by the Free Software Foundation.

  This program is distributed in the hope that it would be useful, but
  WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  

  Further, this software is distributed without any warranty that it is
  free of the rightful claim of any third person regarding infringement 
  or the like.  Any license provided herein, whether implied or 
  otherwise, applies only to this software file.  Patent licenses, if
  any, provided herein do not apply to combinations of this program with 
  other software, or any other product whatsoever.  

  You should have received a copy of the GNU Lesser General Public 
  License along with this program; if not, write the Free Software 
  Foundation, Inc., 59 Temple Place - Suite 330, Boston MA 02111-1307, 
  USA.

  Contact information:  Silicon Graphics, Inc., 1600 Amphitheatre Pky,
  Mountain View, CA 94043, or:

  http://www.sgi.com

  For further information regarding this notice, see:

  http://oss.sgi.com/projects/GenInfo/NoticeExplan

*/


/* $Header: /proj/osprey/CVS/open64/osprey1.0/libI77/fmtlib.c,v 1.1.1.1 2005/10/21 19:00:00 marcel Exp $ */
#include <limits.h>
#include <malloc.h>

#ifdef _LONGLONG

#define  __LONGLONG_MAX  LONGLONG_MAX
#define  __ULONGLONG_MAX  ULONGLONG_MAX
#define  __LONGLONG_MIN  LONGLONG_MIN

#else

#define __LONGLONG_MAX  LONG_MAX
#define  __ULONGLONG_MAX  ULONG_MAX
#define  __LONGLONG_MIN  LONG_MIN
#endif        /* _LONGLONG */

#include <cmplrs/fio.h>
#include <stdlib.h>
#include "fmtlib.h"

char *icvt(int value, int *ndigit, int *sign, char *buf)
{
   char           *abuf;

   /* LHL 5/17/89 fix bug 4533 */
   short           minint = 0;

   if (value > 0)
      *sign = 0;
   else if (value < 0) {
      /* LHL 5/17/89 fix bug 4533 */
      if (value == INT_MIN) {
   minint++;
   value++;
      }
      value = -value;
      *sign = 1;
   } else {
      *sign = 0;
      *ndigit = 1;
      *buf = '0';
      *(buf + 1) = '\0';
      return (buf);
   }
   abuf = buf + MAXOCTLENGTH - 1;
   (*abuf--) = '\0';
   while (value > 0) {
      (*abuf--) = (char) (value % 10 + '0');
      value /= 10;
   }
   *ndigit = buf + MAXOCTLENGTH - 2 - abuf;
   /* LHL 5/17/89 fix bug 4533 */
   if (minint) {
      char           *ch;

      ch = buf + MAXOCTLENGTH - 2;
      (*ch)++;
   }
   return (abuf + 1);
}

char *llcvt(ftnll value, int *ndigit, int *sign, char *buf)
{
   char           *abuf;

   /* LHL 5/17/89 fix bug 4533 */
   short           minint = 0;

   if (value > 0)
      *sign = 0;
   else if (value < 0) {
      /* LHL 5/17/89 fix bug 4533 */
      if (value == (long long) -__LONGLONG_MAX - 1) {
   minint++;
   value++;
      }
      value = -value;
      *sign = 1;
   } else {
      *sign = 0;
      *ndigit = 1;
      *buf = '0';
      *(buf + 1) = '\0';
      return (buf);
   }
   abuf = buf + MAXOCTLENGTH - 1;
   (*abuf--) = '\0';
#if 0
   while ((*(long *) &value > 0) || (*(long *) &value == 0 &&
             *((long *) &value + 1) != 0))
      /* basically 'while (value > (long long 0))' */
#endif
   while (value > 0LL) {
      long long       temp;

      temp = value % 10;
      (*abuf--) = (char) (temp + '0');
      value = value / 10;
   }
   *ndigit = buf + MAXOCTLENGTH - 2 - abuf;
   /* LHL 5/17/89 fix bug 4533 */
   if (minint) {
      char           *ch;

      ch = buf + MAXOCTLENGTH - 2;
      (*ch)++;
   }
   return (abuf + 1);
}

char *ozcvt(unsigned char *value, int len, int *ndigit, int base, char *buf)
{
   register char  *abuf;
   register unsigned char c, *vbuf;
   register unsigned int d;
   register int    ibits, bits, maxbytes;

   bits = ((--base) < 8) ? 3 : 4;
   maxbytes = (len * 8) / bits + 3;
#ifdef _MIPSEB
   vbuf = value;
   while (*vbuf == '\0' && len > 0) {
      vbuf++;
      len--;
   }
   vbuf += len - 1;
#else
   vbuf = value + len - 1;
   while (*vbuf == '\0' && len > 0) {
      vbuf--;
      len--;
   }
   vbuf = value;
#endif
   if (len == 0) {
      *buf = '0';
      *(buf + 1) = '\0';
      *ndigit = 1;
      return (buf);
   }
   abuf = buf + maxbytes - 1;
   (*abuf--) = '\0';
   d = 0;
   ibits = 0;

   while (len--) {
#ifdef _MIPSEB
      c = (*vbuf--);
#else
      c = *vbuf++;
#endif
      d |= c << ibits;
      ibits += 8;
      while (ibits >= bits) {
   c = (unsigned char) (d & base);
   (*abuf--) = (char) (c + (c > 9 ? ('A' - 10) : '0'));
   d >>= bits;
   ibits -= bits;
      }
   }
   if (ibits) {
      c = (unsigned char) (d & base);
      (*abuf--) = (char) (c + (c > 9 ? ('A' - 10) : '0'));
   }
   while (*++abuf == '0');
   *ndigit = buf + maxbytes - abuf - 1;
   return (abuf);
}

#ifdef I90
char *bcvt(unsigned char *value, int len, int *ndigit, char *buf)
{
   register char  *abuf;
   register unsigned char c, *vbuf;
   register int    maxbytes;

   maxbytes = len * 8;

#ifdef _MIPSEB
   vbuf = value;
   while (*vbuf == '\0' && len > 0) {
      vbuf++;
      len--;
   }
   vbuf += len - 1;
#else
   vbuf = value + len - 1;
   while (*vbuf == '\0' && len > 0) {
      vbuf--;
      len--;
   }
   vbuf = value;
#endif

   if (len == 0) {
      *ndigit = 0;
      return (0);
   }

   abuf = buf + maxbytes;
   (*abuf--) = '\0';

   while (len--) {

#ifdef _MIPSEB
      c = (*vbuf--);
#else
      c = *vbuf++;
#endif

      if (c & 1) (*abuf--) = '1';
      else (*abuf--) = '0';
      if (c & 2) (*abuf--) = '1';
      else (*abuf--) = '0';
      if (c & 4) (*abuf--) = '1';
      else (*abuf--) = '0';
      if (c & 8) (*abuf--) = '1';
      else (*abuf--) = '0';
      if (c & 16) (*abuf--) = '1';
      else (*abuf--) = '0';
      if (c & 32) (*abuf--) = '1';
      else (*abuf--) = '0';
      if (c & 64) (*abuf--) = '1';
      else (*abuf--) = '0';
      if (c & 128) (*abuf--) = '1';
      else (*abuf--) = '0';

   }

   while (*(++abuf) == '0' );
   *ndigit = buf + maxbytes - abuf;
   return (abuf);

}
#endif

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