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[libc] add atof, strtof and strtod · llvm/llvm-project@87c0160 · GitHub
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Commit 87c0160
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[libc] add atof, strtof and strtod
Add the string to floating point conversion functions.
Long doubles aren't supported yet, but floats and doubles are. The
primary algorithm used is the Eisel-Lemire ParseNumberF64 algorithm,
with the Simple Decimal Conversion algorithm as backup.
Links for more information on the algorithms:
Number Parsing at a Gigabyte per Second, Software: Practice and
Experience 51 (8), 2021 (https://arxiv.org/abs/2101.11408)
https://nigeltao.github.io/blog/2020/eisel-lemire.html
https://nigeltao.github.io/blog/2020/parse-number-f64-simple.html
Differential Revision: https://reviews.llvm.org/D1092611 parent 684b626 commit 87c0160Copy full SHA for 87c0160
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