| /programs/develop/ktcc/trunk/libc/stdlib/atoi.c |
|---|
| 0,0 → 1,21 |
|---|
| #include "stdio.h" |
| #include "stdlib.h" |
| #include "ctype.h" |
| |
| |
| /* |
| ** atoi(s) - convert s to integer. |
| */ |
| int atoi(char *s) |
| { |
| int sign, n; |
| while(isspace(*s)) ++s; |
| sign = 1; |
| switch(*s) { |
| case '-': sign = -1; |
| case '+': ++s; |
| } |
| n = 0; |
| while(isdigit(*s)) n = 10 * n + *s++ - '0'; |
| return (sign * n); |
| } |
| /programs/develop/ktcc/trunk/libc/stdlib/atoib.cpp |
|---|
| 0,0 → 1,22 |
|---|
| #include "stdio.h" |
| #include "stdlib.h" |
| #include "ctype.h" |
| |
| /* |
| ** atoib(s,b) - Convert s to "unsigned" integer in base b. |
| ** NOTE: This is a non-standard function. |
| */ |
| int atoib(char *s,int b) |
| { |
| int n, digit; |
| n = 0; |
| while(isspace(*s)) ++s; |
| while((digit = (127 & *s++)) >= '0') { |
| if(digit >= 'a') digit -= 87; |
| else if(digit >= 'A') digit -= 55; |
| else digit -= '0'; |
| if(digit >= b) break; |
| n = b * n + digit; |
| } |
| return (n); |
| } |
| /programs/develop/ktcc/trunk/libc/stdlib/itoa.c |
|---|
| 0,0 → 1,21 |
|---|
| #include "stdio.h" |
| #include "stdlib.h" |
| #include "ctype.h" |
| |
| /* |
| ** itoa(n,s) - Convert n to characters in s |
| */ |
| void itoa(int n,char* s) |
| { |
| int sign; |
| char *ptr; |
| ptr = s; |
| if ((sign = n) < 0) n = -n; |
| do { |
| *ptr++ = n % 10 + '0'; |
| } while ((n = n / 10) > 0); |
| if (sign < 0) *ptr++ = '-'; |
| *ptr = '\0'; |
| reverse(s); |
| } |
| |
| /programs/develop/ktcc/trunk/libc/stdlib/itoab.c |
|---|
| 0,0 → 1,24 |
|---|
| #include "stdio.h" |
| #include "stdlib.h" |
| #include "ctype.h" |
| |
| /* |
| ** itoab(n,s,b) - Convert "unsigned" n to characters in s using base b. |
| ** NOTE: This is a non-standard function. |
| */ |
| void itoab(int n,char* s,int b) |
| { |
| char *ptr; |
| int lowbit; |
| ptr = s; |
| b >>= 1; |
| do { |
| lowbit = n & 1; |
| n = (n >> 1) & 32767; |
| *ptr = ((n % b) << 1) + lowbit; |
| if(*ptr < 10) *ptr += '0'; else *ptr += 55; |
| ++ptr; |
| } while(n /= b); |
| *ptr = 0; |
| reverse (s); |
| } |