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authorAlex Crichton <alex@alexcrichton.com>2018-05-10 11:35:29 -0500
committerGitHub <noreply@github.com>2018-05-10 11:35:29 -0500
commitbe6fab8ca8b89da2aea447d6e597074810e3f351 (patch)
tree5a33df8e5b952d60b91f9744623a8f23903e2f30 /src/liballoc
parentdd40277d0f646c700d22dab4c929733a37cbb822 (diff)
parent0ba1c101dce22fbe30933a90efd237a09227e07d (diff)
downloadrust-be6fab8ca8b89da2aea447d6e597074810e3f351.tar.gz
rust-be6fab8ca8b89da2aea447d6e597074810e3f351.zip
Rollup merge of #50572 - frewsxcv:frewsxcv-fma, r=sfackler
Clarify in the docs that `mul_add` is not always faster.

Fixes https://github.com/rust-lang/rust/issues/49842.

Other resources:

- https://users.rust-lang.org/t/why-does-the-mul-add-method-produce-a-more-accurate-result-with-better-performance/1626
- https://en.wikipedia.org/wiki/Multiply%E2%80%93accumulate_operation
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