1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
|
/*-------------------------------------------------------------------------
ltoa.c - long integer to string conversion
Copyright (C) 1999, Bela Torok <bela.torok at kssg.ch>
This library is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by the
Free Software Foundation; either version 2, 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this library; see the file COPYING. If not, write to the
Free Software Foundation, 51 Franklin Street, Fifth Floor, Boston,
MA 02110-1301, USA.
As a special exception, if you link this library with other files,
some of which are compiled with SDCC, to produce an executable,
this library does not by itself cause the resulting executable to
be covered by the GNU General Public License. This exception does
not however invalidate any other reasons why the executable file
might be covered by the GNU General Public License.
-------------------------------------------------------------------------*/
/*-------------------------------------------------------------------------
value -> Number to be converted
string -> Result
radix -> Base of value (e.g.: 2 for binary, 10 for decimal, 16 for hex)
---------------------------------------------------------------------------*/
#define NUMBER_OF_DIGITS 32
#if _DEBUG
extern void io_long(unsigned long);
extern void io_str(char *);
#endif
void ultoa(unsigned long value, __data char* str, unsigned char radix)
{
unsigned int index;
unsigned char ch;
unsigned char buffer[NUMBER_OF_DIGITS]; /* space for NUMBER_OF_DIGITS + '\0' */
index = NUMBER_OF_DIGITS;
do {
ch = '0' + (value % radix);
if ( ch > (unsigned char)'9') ch += 'a' - '9' - 1;
#if _DEBUG
io_str( "ultoa: " );
io_long( value );
io_long( (unsigned long) ch );
#endif
buffer[ --index ] = ch;
value /= radix;
} while (value != 0);
do {
*str++ = buffer[index++];
} while ( index < NUMBER_OF_DIGITS );
*str = 0; /* string terminator */
}
void ltoa(long value, __data char* str, unsigned char radix)
{
#if _DEBUG
io_str( "ltoa: " );
io_long( (unsigned long)value );
#endif
if (value < 0 && radix == 10) {
*str++ = '-';
value = -value;
}
ultoa((unsigned long)value, str, radix);
}
|
