int2num.c

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/* int2num.c: bcmath library file. */
/*
    Copyright (C) 1991, 1992, 1993, 1994, 1997 Free Software Foundation, Inc.
    Copyright (C) 2000 Philip A. Nelson
 
    This library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Lesser General Public
    License as published by the Free Software Foundation; either
    version 2 of the License, or (at your option) any later version.
 
    This library is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    Lesser General Public License for more details.  (LICENSE)
 
    You should have received a copy of the GNU Lesser General Public
    License along with this library; if not, write to:
 
      The Free Software Foundation, Inc.
      59 Temple Place, Suite 330
      Boston, MA 02111-1307 USA.
 
    You may contact the author by:
       e-mail:  philnelson@acm.org
      us-mail:  Philip A. Nelson
                Computer Science Department, 9062
                Western Washington University
                Bellingham, WA 98226-9062
 
*************************************************************************/
 
#include "bcmath.h"
 
/* Convert an integer VAL to a bc number NUM. */
 
void bc_int2num(bc_num *num, int val)
{
    char buffer[30];
    char *bptr, *vptr;
    int ix = 1;
    char neg = 0;
 
    /* Sign. */
    if (val < 0) {
        neg = 1;
        val = -val;
    }
 
    /* Get things going. */
    bptr = buffer;
    *bptr++ = val % BASE;
    val = val / BASE;
 
    /* Extract remaining digits. */
    while (val != 0) {
        *bptr++ = val % BASE;
        val = val / BASE;
        /* Count the digits. */
        ix++;
    }
 
    /* Make the number. */
    bc_free_num (num);
    *num = bc_new_num (ix, 0);
    if (neg) {
        (*num)->n_sign = MINUS;
    }
 
    /* Assign the digits. */
    vptr = (*num)->n_value;
    while (ix-- > 0) {
        *vptr++ = *--bptr;
    }
}