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quicker %

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This commit is contained in:
Enno Rehling 2007-04-04 19:27:20 +00:00
parent 85e9803acf
commit 81a89b8d47
1 changed files with 55 additions and 55 deletions
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110
src/common/util/base36.c
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@ -29,82 +29,82 @@
int
atoi36(const char * str)
{
/* cannot use strtol, becuase invalid strings will cause crash */
const unsigned char * s = (const unsigned char *)str;
int i = 0;
assert(s);
if(!(*s)) return 0;
/* cannot use strtol, becuase invalid strings will cause crash */
const unsigned char * s = (const unsigned char *)str;
int i = 0;
assert(s);
if(!(*s)) return 0;
while(isspace((int)*s)) ++s;
while(isalnum((int)*s)) {
if (isupper((int)*s)) i = i*36 + (*s)-'A' + 10;
else if (islower((int)*s)) i=i*36 + (*s)-'a' + 10;
else if (isdigit((int)*s)) i=i*36 + (*s)-'0';
else
break;
++s;
}
if (i<0) return 0;
return i;
while(isspace((int)*s)) ++s;
while(isalnum((int)*s)) {
if (isupper((int)*s)) i = i*36 + (*s)-'A' + 10;
else if (islower((int)*s)) i=i*36 + (*s)-'a' + 10;
else if (isdigit((int)*s)) i=i*36 + (*s)-'0';
else
break;
++s;
}
if (i<0) return 0;
return i;
}
const char*
itoab(int i, int base)
{
static char **as = NULL;
char * s, * dst;
static int index = 0;
int neg = 0;
static char **as = NULL;
char * s, * dst;
static int index = 0;
int neg = 0;
if (!as) {
int j;
char * x = (char*)calloc(sizeof(char), 8*4);
as = (char **)calloc(sizeof(char*), 4);
for (j=0;j!=4;++j) as[j] = x+j*8;
}
s = as[index];
index = (index+1) % 4;
dst = s+7;
(*dst--)=0;
if (i!=0) {
if (i<0) {
i=-i;
neg = 1;
}
while (i) {
int x = i % base;
i = i / base;
if (x<10) *(dst--) = (char)('0' + x);
else if ('a' + x - 10 == 'l') *(dst--) = 'L';
else *(dst--) = (char)('a' + (x-10));
}
if (neg) *(dst) = '-';
else ++dst;
}
else *dst = '0';
if (!as) {
int j;
char * x = (char*)calloc(sizeof(char), 8*4);
as = (char **)calloc(sizeof(char*), 4);
for (j=0;j!=4;++j) as[j] = x+j*8;
}
s = as[index];
index = (index+1) & 3; /* quick for % 4 */
dst = s+7;
(*dst--)=0;
if (i!=0) {
if (i<0) {
i=-i;
neg = 1;
}
while (i) {
int x = i % base;
i = i / base;
if (x<10) *(dst--) = (char)('0' + x);
else if ('a' + x - 10 == 'l') *(dst--) = 'L';
else *(dst--) = (char)('a' + (x-10));
}
if (neg) *(dst) = '-';
else ++dst;
}
else *dst = '0';
return dst;
return dst;
}
const char*
itoa36(int i)
{
return itoab(i, 36);
return itoab(i, 36);
}
const char*
itoa10(int i)
{
return itoab(i, 10);
return itoab(i, 10);
}
int
i10toi36(int i)
{
int r = 0;
while(i) {
r = r*36 + i % 10;
i = i / 10;
}
return r;
int r = 0;
while(i) {
r = r*36 + i % 10;
i = i / 10;
}
return r;
}