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| -rw-r--r-- | doc/README | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/doc/README b/doc/README new file mode 100644 index 0000000..4a96d8e --- /dev/null +++ b/doc/README @@ -0,0 +1,13 @@ +--------------------- + 32 bits vs. 64 bits +--------------------- + +libaec compiles and runs both in 32 and 64 bits. For encoding and +decoding I see a performance degradation with 32 bit binaries of 38% +and 33% resp. + +The main reason for this is that encoding and decoding use a buffer of +type uin64_t to align a potentially 32 bit wide sample with the output +(encoding) or input (decoding) stream. Avoiding the use of this +uin64_t buffer variable would degrade 64 bit performance for a modest +gain in 32 bit performance so I decided against it. |