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| -rw-r--r-- | src/settings.js | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/src/settings.js b/src/settings.js index 2d645a12..84b68b54 100644 --- a/src/settings.js +++ b/src/settings.js @@ -65,6 +65,10 @@ var DOUBLE_MODE = 1; // How to load and store 64-bit doubles. Without typed arra // 0 we will simply store and load doubles as 32-bit floats, so when they are stored/loaded // they will truncate from 64 to 32 bits, and lose precision. This is faster, and might // work for some code (but probably that code should just use floats and not doubles anyhow). + // Note that a downside of DOUBLE_MODE 1 is that we currently store the double in parts, + // then load it aligned, and that load-store will make JS engines alter it if it is being + // stored to a typed array for security reasons. That will 'fix' the number from being a + // NaN or an infinite number. var EMULATE_UNALIGNED_ACCESSES = 1; // If set, the compiler will 'emulate' loads and stores that are not known to // be sufficiently aligned, by working on individual bytes. This can be // important in USE_TYPED_ARRAYS == 2, where unaligned accesses do not work, |