121 lines
3.6 KiB
C
121 lines
3.6 KiB
C
/****************************************************************************
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*
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* Open Watcom Project
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*
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* Portions Copyright (c) 1983-2002 Sybase, Inc. All Rights Reserved.
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*
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* ========================================================================
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*
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* This file contains Original Code and/or Modifications of Original
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* Code as defined in and that are subject to the Sybase Open Watcom
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* Public License version 1.0 (the 'License'). You may not use this file
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* except in compliance with the License. BY USING THIS FILE YOU AGREE TO
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* ALL TERMS AND CONDITIONS OF THE LICENSE. A copy of the License is
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* provided with the Original Code and Modifications, and is also
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* available at www.sybase.com/developer/opensource.
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*
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* The Original Code and all software distributed under the License are
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* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
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* EXPRESS OR IMPLIED, AND SYBASE AND ALL CONTRIBUTORS HEREBY DISCLAIM
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* ALL SUCH WARRANTIES, INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR
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* NON-INFRINGEMENT. Please see the License for the specific language
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* governing rights and limitations under the License.
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*
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* ========================================================================
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*
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* Description: Implementation of ltoa().
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*
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****************************************************************************/
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#include "variety.h"
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#include "widechar.h"
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#include <stdlib.h>
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extern const char __based(__segname("_CONST")) __Alphabet[];
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unsigned long __uldiv( unsigned long, unsigned _WCNEAR * );
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#if defined(__386__)
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#pragma aux __uldiv = \
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"xor edx,edx" \
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"div dword ptr [ebx]" \
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"mov [ebx],edx" \
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parm caller [eax] [ebx] \
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modify exact [eax edx] \
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value [eax];
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#elif defined(M_I86) && defined(__BIG_DATA__)
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#pragma aux __uldiv = \
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"xor cx,cx" \
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"cmp dx,ss:[bx]" \
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"jb short SMALL_ENOUGH" \
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"xchg ax,dx" \
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"xchg cx,dx" \
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"div word ptr ss:[bx]" \
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"xchg ax,cx" \
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"SMALL_ENOUGH:" \
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"div word ptr ss:[bx]" \
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"mov ss:[bx],dx" \
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"mov dx,cx" \
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parm caller [ax dx] [bx] \
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modify exact [ax cx dx] \
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value [ax dx];
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#elif defined(M_I86) && defined(__SMALL_DATA__)
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#pragma aux __uldiv = \
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"xor cx,cx" \
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"cmp dx,[bx]" \
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"jb short SMALL_ENOUGH" \
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"xchg ax,dx" \
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"xchg cx,dx" \
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"div word ptr [bx]" \
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"xchg ax,cx" \
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"SMALL_ENOUGH:" \
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"div word ptr [bx]" \
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"mov [bx],dx" \
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"mov dx,cx" \
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parm caller [ax dx] [bx] \
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modify exact [ax cx dx] \
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value [ax dx];
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#endif
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_WCRTLINK CHAR_TYPE *__F_NAME(ultoa,_ultow)( unsigned long value, CHAR_TYPE *buffer, int radix )
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{
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CHAR_TYPE *p = buffer;
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char *q;
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unsigned rem;
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char buf[34]; // only holds ASCII so 'char' is OK
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buf[0] = '\0';
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q = &buf[1];
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do {
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#if defined(_M_IX86) && defined(__WATCOMC__)
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rem = radix;
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value = __uldiv( value, (unsigned _WCNEAR *) &rem );
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#else
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rem = value % radix;
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value = value / radix;
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#endif
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*q = __Alphabet[rem];
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++q;
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} while( value != 0 );
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while( (*p++ = (CHAR_TYPE)*--q) )
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;
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return( buffer );
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}
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_WCRTLINK CHAR_TYPE *__F_NAME(ltoa,_ltow)( long value, CHAR_TYPE *buffer, int radix )
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{
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CHAR_TYPE *p = buffer;
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if( radix == 10 ) {
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if( value < 0 ) {
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*p++ = '-';
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value = - value;
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}
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}
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__F_NAME(ultoa,_ultow)( value, p, radix );
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return( buffer );
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}
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