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| author | VoR0220 <rj@erisindustries.com> | 2016-09-10 10:03:23 +0800 |
|---|---|---|
| committer | VoR0220 <rj@erisindustries.com> | 2016-09-10 10:03:23 +0800 |
| commit | cbd933ceedc9d38df356856eec7bfca07d440523 (patch) | |
| tree | 1afcc8f9bcaad8de4a50d2795dc6e573e961abd7 | |
| parent | 51a98ab84a59fd5fb34378763fd9ed635cf06d8d (diff) | |
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Solidity helper function for testing fixed points
Signed-off-by: VoR0220 <rj@erisindustries.com>
| -rw-r--r-- | test/libsolidity/SolidityExecutionFramework.h | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/test/libsolidity/SolidityExecutionFramework.h b/test/libsolidity/SolidityExecutionFramework.h index 6cf7e0ee..a4181dfe 100644 --- a/test/libsolidity/SolidityExecutionFramework.h +++ b/test/libsolidity/SolidityExecutionFramework.h @@ -39,6 +39,7 @@ namespace dev { namespace solidity { + using rational = boost::rational<dev::bigint>; /// An Ethereum address: 20 bytes. /// @NOTE This is not endian-specific; it's just a bunch of bytes. using Address = h160; @@ -186,7 +187,12 @@ public: { return encodeArgs(u256(0x20), u256(_arg.size()), _arg); } - + static u256 fixed(dev::bigint _numerator, dev::bigint _denominator, int _fixedBits) + { + rational _value = rational(dev::bigint(_numerator), dev::bigint(_denominator)); + rational value = _value * boost::multiprecision::pow(bigint(2), _fixedBits); + return u256(value.numerator()/value.denominator()); + } class ContractInterface { public: |