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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 4680 | right-hear | 1 | #include |
| 2 | #include |
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| 3 | #include |
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| 4 | #include |
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| 5 | #include |
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| 6 | |||
| 7 | #define __expect(foo,bar) (foo) |
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| 8 | #define __likely(foo) __expect((foo),1) |
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| 9 | #define __unlikely(foo) __expect((foo),0) |
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| 10 | |||
| 11 | unsigned long long int strtoull(const char *ptr, char **endptr, int base) |
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| 12 | { |
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| 13 | int neg = 0, overflow = 0; |
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| 14 | long long int v=0; |
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| 15 | const char* orig; |
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| 16 | const char* nptr=ptr; |
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| 17 | |||
| 18 | while(isspace(*nptr)) ++nptr; |
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| 19 | |||
| 20 | if (*nptr == '-') { neg=1; nptr++; } |
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| 21 | else if (*nptr == '+') ++nptr; |
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| 22 | orig=nptr; |
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| 23 | if (base==16 && nptr[0]=='0') goto skip0x; |
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| 24 | if (base) { |
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| 25 | register unsigned int b=base-2; |
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| 26 | if (__unlikely(b>34)) { errno=EINVAL; return 0; } |
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| 27 | } else { |
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| 28 | if (*nptr=='0') { |
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| 29 | base=8; |
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| 30 | skip0x: |
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| 31 | if (((*(nptr+1)=='x')||(*(nptr+1)=='X')) && isxdigit(nptr[2])) { |
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| 32 | nptr+=2; |
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| 33 | base=16; |
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| 34 | } |
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| 35 | } else |
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| 36 | base=10; |
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| 37 | } |
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| 38 | while(__likely(*nptr)) { |
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| 39 | register unsigned char c=*nptr; |
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| 40 | c=(c>='a'?c-'a'+10:c>='A'?c-'A'+10:c<='9'?c-'0':0xff); |
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| 41 | if (__unlikely(c>=base)) break; /* out of base */ |
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| 42 | { |
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| 43 | register unsigned long x=(v&0xff)*base+c; |
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| 44 | register unsigned long long w=(v>>8)*base+(x>>8); |
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| 45 | if (w>(ULLONG_MAX>>8)) overflow=1; |
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| 46 | v=(w<<8)+(x&0xff); |
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| 47 | } |
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| 48 | ++nptr; |
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| 49 | } |
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| 50 | if (__unlikely(nptr==orig)) { /* no conversion done */ |
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| 51 | nptr=ptr; |
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| 52 | errno=EINVAL; |
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| 53 | v=0; |
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| 54 | } |
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| 55 | if (endptr) *endptr=(char *)nptr; |
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| 56 | if (overflow) { |
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| 57 | errno=ERANGE; |
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| 58 | return ULLONG_MAX; |
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| 59 | } |
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| 60 | return (neg?-v:v); |
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| 61 | } |
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| 62 | |||
| 63 | /* die, BSD, die!!! */ |
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| 64 | unsigned long long int strtouq(const char *nptr, char **endptr, int base) |
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| 65 | __attribute__((alias("strtoull"))); |
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| 66 | |||
| 67 | uintmax_t strtoumax(const char *nptr, char **endptr, int base) |
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| 68 | __attribute__((alias("strtoull"))); |