Return to num2str.c CVS log

Up to [ELWIX - Embedded LightWeight unIX -] / embedaddon / php / ext / bcmath / libbcmath / src

Annotation of embedaddon/php/ext/bcmath/libbcmath/src/num2str.c, revision 1.1

1.1     ! misho       1: /* num2str.c: bcmath library file. */
        !             2: /*
        !             3:     Copyright (C) 1991, 1992, 1993, 1994, 1997 Free Software Foundation, Inc.
        !             4:     Copyright (C) 2000 Philip A. Nelson
        !             5: 
        !             6:     This library is free software; you can redistribute it and/or
        !             7:     modify it under the terms of the GNU Lesser General Public
        !             8:     License as published by the Free Software Foundation; either
        !             9:     version 2 of the License, or (at your option) any later version.
        !            10: 
        !            11:     This library is distributed in the hope that it will be useful,
        !            12:     but WITHOUT ANY WARRANTY; without even the implied warranty of
        !            13:     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
        !            14:     Lesser General Public License for more details.  (COPYING.LIB)
        !            15: 
        !            16:     You should have received a copy of the GNU Lesser General Public
        !            17:     License along with this library; if not, write to:
        !            18: 
        !            19:       The Free Software Foundation, Inc.
        !            20:       59 Temple Place, Suite 330
        !            21:       Boston, MA 02111-1307 USA.
        !            22: 
        !            23:     You may contact the author by:
        !            24:        e-mail:  philnelson@acm.org
        !            25:       us-mail:  Philip A. Nelson
        !            26:                 Computer Science Department, 9062
        !            27:                 Western Washington University
        !            28:                 Bellingham, WA 98226-9062
        !            29:        
        !            30: *************************************************************************/
        !            31: 
        !            32: #include <config.h>
        !            33: #include <stdio.h>
        !            34: #include <assert.h>
        !            35: #include <stdlib.h>
        !            36: #include <ctype.h>
        !            37: #include <stdarg.h>
        !            38: #include "bcmath.h"
        !            39: #include "private.h"
        !            40: 
        !            41: /* Convert a numbers to a string.  Base 10 only.*/
        !            42: 
        !            43: char
        !            44: *bc_num2str (num)
        !            45:       bc_num num;
        !            46: {
        !            47:   char *str, *sptr;
        !            48:   char *nptr;
        !            49:   int  index, signch;
        !            50: 
        !            51:   /* Allocate the string memory. */
        !            52:   signch = ( num->n_sign == PLUS ? 0 : 1 );  /* Number of sign chars. */
        !            53:   if (num->n_scale > 0)
        !            54:     str = (char *) safe_emalloc (1, num->n_len + num->n_scale, 2 + signch);
        !            55:   else
        !            56:     str = (char *) safe_emalloc (1, num->n_len, 1 + signch);
        !            57:   if (str == NULL) bc_out_of_memory();
        !            58: 
        !            59:   /* The negative sign if needed. */
        !            60:   sptr = str;
        !            61:   if (signch) *sptr++ = '-';
        !            62: 
        !            63:   /* Load the whole number. */
        !            64:   nptr = num->n_value;
        !            65:   for (index=num->n_len; index>0; index--)
        !            66:     *sptr++ = BCD_CHAR(*nptr++);
        !            67: 
        !            68:   /* Now the fraction. */
        !            69:   if (num->n_scale > 0)
        !            70:     {
        !            71:       *sptr++ = '.';
        !            72:       for (index=0; index<num->n_scale; index++)
        !            73:        *sptr++ = BCD_CHAR(*nptr++);
        !            74:     }
        !            75: 
        !            76:   /* Terminate the string and return it! */
        !            77:   *sptr = '\0';
        !            78:   return (str);
        !            79: }