#ifndef COSMOPOLITAN_LIBC_STDCKDINT_H_ #define COSMOPOLITAN_LIBC_STDCKDINT_H_ #if !defined(MODE_DBG) && \ ((defined(__GNUC__) && __GNUC__ >= 5 && !defined(__ICC)) || \ (defined(__has_builtin) && (__has_builtin(__builtin_add_overflow) && \ __has_builtin(__builtin_sub_overflow) && \ __has_builtin(__builtin_mul_overflow)))) #define ckd_add(res, x, y) __builtin_add_overflow((x), (y), (res)) #define ckd_sub(res, x, y) __builtin_sub_overflow((x), (y), (res)) #define ckd_mul(res, x, y) __builtin_mul_overflow((x), (y), (res)) #else #define ckd_add(res, x, y) __ckd_arithmetic(add, res, x, y) #define ckd_sub(res, x, y) __ckd_arithmetic(sub, res, x, y) #define ckd_mul(res, x, y) __ckd_arithmetic(mul, res, x, y) #if defined(__SIZEOF_LONG__) && __SIZEOF_LONG__ == 8 && \ ((defined(__GNUC__) && __GNUC__ * 100 + __GNUC_MINOR__ >= 406) || \ defined(__llvm__)) && \ !defined(__STRICT_ANSI__) #define __ckd_dword __int128 #else #define __ckd_dword long long #endif #define __ckd_arithmetic(op, res, x, y) \ (sizeof(*(res)) == sizeof(int) ? __ckd_##op((int *)(res), (x), (y)) \ : sizeof(*(res)) == sizeof(long) ? __ckd_##op##l((long *)(res), (x), (y)) \ : sizeof(*(res)) == sizeof(__ckd_dword) \ ? __ckd_##op##ll((__ckd_dword *)(res), (x), (y)) \ : __ckd_trap()) __funline int __ckd_trap(void) { volatile int __x = 0; return 1 / __x; } __funline int __ckd_add(int *__z, int __x, int __y) { unsigned int __a, __b, __c; *__z = __c = (__a = __x) + (__b = __y); return ((__c ^ __a) & (__c ^ __b)) >> (sizeof(int) * CHAR_BIT - 1); } __funline int __ckd_addl(long *__z, long __x, long __y) { unsigned long __a, __b, __c; *__z = __c = (__a = __x) + (__b = __y); return ((__c ^ __a) & (__c ^ __b)) >> (sizeof(long) * CHAR_BIT - 1); } __funline int __ckd_addll(__ckd_dword *__z, __ckd_dword __x, __ckd_dword __y) { unsigned __ckd_dword __a, __b, __c; *__z = __c = (__a = __x) + (__b = __y); return ((__c ^ __a) & (__c ^ __b)) >> (sizeof(__ckd_dword) * CHAR_BIT - 1); } __funline int __ckd_sub(int *__z, int __x, int __y) { unsigned int __a, __b, __c; *__z = __c = (__a = __x) - (__b = __y); return ((__a ^ __b) & (__c ^ __a)) >> (sizeof(int) * CHAR_BIT - 1); } __funline int __ckd_subl(long *__z, long __x, long __y) { unsigned long __a, __b, __c; *__z = __c = (__a = __x) - (__b = __y); return ((__a ^ __b) & (__c ^ __a)) >> (sizeof(long) * CHAR_BIT - 1); } __funline int __ckd_subll(__ckd_dword *__z, __ckd_dword __x, __ckd_dword __y) { unsigned __ckd_dword __a, __b, __c; *__z = __c = (__a = __x) - (__b = __y); return ((__a ^ __b) & (__c ^ __a)) >> (sizeof(__ckd_dword) * CHAR_BIT - 1); } int __mulosi4(int, int, int *); long __mulodi4(long, long, int *); __ckd_dword __muloti4(__ckd_dword, __ckd_dword, int *); __funline int __ckd_mul(int *__z, int __x, int __y) { int __o; *__z = __mulosi4(__x, __y, &__o); return __o; } __funline int __ckd_mull(long *__z, long __x, long __y) { int __o; *__z = __mulodi4(__x, __y, &__o); return __o; } __funline int __ckd_mulll(__ckd_dword *__z, __ckd_dword __x, __ckd_dword __y) { int __o; *__z = __muloti4(__x, __y, &__o); return __o; } #endif #endif /* COSMOPOLITAN_LIBC_STDCKDINT_H_ */