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| author | Alon Zakai <alonzakai@gmail.com> | 2016-02-02 16:40:44 -0800 |
|---|---|---|
| committer | Alon Zakai <alonzakai@gmail.com> | 2016-02-02 19:20:43 -0800 |
| commit | b1cd906c688f52228a59a8ff244ec581d062550e (patch) | |
| tree | 65a4f8f5bfc9b2fe3b68c75e5537c3b113d1359a | |
| parent | 9a4dc90db0433473fbcf2b0ba3fa99efc9e77a31 (diff) | |
| download | binaryen-b1cd906c688f52228a59a8ff244ec581d062550e.tar.gz binaryen-b1cd906c688f52228a59a8ff244ec581d062550e.tar.bz2 binaryen-b1cd906c688f52228a59a8ff244ec581d062550e.zip | |
convert Neg to use int bits
| -rw-r--r-- | src/wasm-interpreter.h | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/src/wasm-interpreter.h b/src/wasm-interpreter.h index 3fa83b863..eb0ba9c19 100644 --- a/src/wasm-interpreter.h +++ b/src/wasm-interpreter.h @@ -411,8 +411,9 @@ private: float v = value.getf32(); float ret; switch (curr->op) { - case Neg: ret = -v; break; - case Abs: return Literal(value.reinterpreti32() & 0x7fffffff).castToF32(); break; // operate on bits directly, to avoid signalling bit being set on a float + // operate on bits directly, to avoid signalling bit being set on a float + case Neg: return Literal(value.reinterpreti32() ^ 0x80000000).castToF32(); break; + case Abs: return Literal(value.reinterpreti32() & 0x7fffffff).castToF32(); break; case Ceil: ret = std::ceil(v); break; case Floor: ret = std::floor(v); break; case Trunc: ret = std::trunc(v); break; @@ -430,8 +431,9 @@ private: double v = value.getf64(); double ret; switch (curr->op) { - case Neg: ret = -v; break; - case Abs: return Literal(value.reinterpreti64() & 0x7fffffffffffffffUL).castToF64(); break; // operate on bits directly, to avoid signalling bit being set on a float + // operate on bits directly, to avoid signalling bit being set on a float + case Neg: return Literal(value.reinterpreti64() ^ 0x8000000000000000UL).castToF64(); break; + case Abs: return Literal(value.reinterpreti64() & 0x7fffffffffffffffUL).castToF64(); break; case Ceil: ret = std::ceil(v); break; case Floor: ret = std::floor(v); break; case Trunc: ret = std::trunc(v); break; |