diff options
Diffstat (limited to 'deps/icu-small/source/common/putilimp.h')
| -rw-r--r-- | deps/icu-small/source/common/putilimp.h | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/deps/icu-small/source/common/putilimp.h b/deps/icu-small/source/common/putilimp.h index 56ea8df009..023e06879a 100644 --- a/deps/icu-small/source/common/putilimp.h +++ b/deps/icu-small/source/common/putilimp.h @@ -391,6 +391,32 @@ U_INTERNAL double U_EXPORT2 uprv_log(double d); */ U_INTERNAL double U_EXPORT2 uprv_round(double x); +/** + * Adds the signed integers a and b, storing the result in res. + * Checks for signed integer overflow. + * Similar to the GCC/Clang extension __builtin_add_overflow + * + * @param a The first operand. + * @param b The second operand. + * @param res a + b + * @return true if overflow occurred; false if no overflow occurred. + * @internal + */ +U_INTERNAL UBool U_EXPORT2 uprv_add32_overflow(int32_t a, int32_t b, int32_t* res); + +/** + * Multiplies the signed integers a and b, storing the result in res. + * Checks for signed integer overflow. + * Similar to the GCC/Clang extension __builtin_mul_overflow + * + * @param a The first multiplicand. + * @param b The second multiplicand. + * @param res a * b + * @return true if overflow occurred; false if no overflow occurred. + * @internal + */ +U_INTERNAL UBool U_EXPORT2 uprv_mul32_overflow(int32_t a, int32_t b, int32_t* res); + #if 0 /** * Returns the number of digits after the decimal point in a double number x. |