diff options
Diffstat (limited to 'luni/src/main/native/cbigint.cpp')
| -rw-r--r-- | luni/src/main/native/cbigint.cpp | 43 |
1 files changed, 20 insertions, 23 deletions
diff --git a/luni/src/main/native/cbigint.cpp b/luni/src/main/native/cbigint.cpp index 0b7cc42..da15fcb 100644 --- a/luni/src/main/native/cbigint.cpp +++ b/luni/src/main/native/cbigint.cpp @@ -251,29 +251,26 @@ simpleMultiplyAddHighPrecision (uint64_t * arg1, int32_t length, uint64_t arg2, #if __BYTE_ORDER != __LITTLE_ENDIAN void simpleMultiplyAddHighPrecisionBigEndianFix(uint64_t* arg1, int32_t length, uint64_t arg2, uint32_t* result) { - /* Assumes result can hold the product and arg2 only holds 32 bits - of information */ - uint64_t product; - int32_t index, resultIndex; - - index = resultIndex = 0; - product = 0; - - do { - product = HIGH_IN_U64(product) + result[halfAt(resultIndex)] + arg2 * LOW_U32_FROM_PTR(arg1 + index); - result[halfAt(resultIndex)] = LOW_U32_FROM_VAR(product); - ++resultIndex; - product = HIGH_IN_U64(product) + result[halfAt(resultIndex)] + arg2 * HIGH_U32_FROM_PTR(arg1 + index); - result[halfAt(resultIndex)] = LOW_U32_FROM_VAR(product); - ++resultIndex; - } while (++index < length); - - result[halfAt(resultIndex)] += HIGH_U32_FROM_VAR(product); - if (result[halfAt(resultIndex)] < HIGH_U32_FROM_VAR(product)) { - /* must be careful with ++ operator and macro expansion */ - ++resultIndex; - while (++result[halfAt(resultIndex)] == 0) ++resultIndex; - } + /* Assumes result can hold the product and arg2 only holds 32 bits of information */ + int32_t index = 0; + int32_t resultIndex = 0; + uint64_t product = 0; + + do { + product = HIGH_IN_U64(product) + result[halfAt(resultIndex)] + arg2 * LOW_U32_FROM_PTR(arg1 + index); + result[halfAt(resultIndex)] = LOW_U32_FROM_VAR(product); + ++resultIndex; + product = HIGH_IN_U64(product) + result[halfAt(resultIndex)] + arg2 * HIGH_U32_FROM_PTR(arg1 + index); + result[halfAt(resultIndex)] = LOW_U32_FROM_VAR(product); + ++resultIndex; + } while (++index < length); + + result[halfAt(resultIndex)] += HIGH_U32_FROM_VAR(product); + if (result[halfAt(resultIndex)] < HIGH_U32_FROM_VAR(product)) { + /* must be careful with ++ operator and macro expansion */ + ++resultIndex; + while (++result[halfAt(resultIndex)] == 0) ++resultIndex; + } } #endif |