Petr Hosek
5ff3ff33ff
[libc] Migrate to using LIBC_NAMESPACE_DECL for namespace declaration ( #98597 )
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This is a part of #97655 .
2024-07-12 09:28:41 -07:00
Mehdi Amini
ce9035f5bd
Revert "[libc] Migrate to using LIBC_NAMESPACE_DECL for namespace declaration" ( #98593 )
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Reverts llvm/llvm-project#98075
bots are broken
2024-07-12 09:12:13 +02:00
Petr Hosek
3f30effe1b
[libc] Migrate to using LIBC_NAMESPACE_DECL for namespace declaration ( #98075 )
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This is a part of #97655 .
2024-07-11 12:35:22 -07:00
Nick Desaulniers
7789ec067d
[libc] s/NULL/nullptr ( #86867 )
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Otherwise we need to pull in stddef.h for the declaration of NULL.
2024-03-28 08:43:11 -07:00
Guillaume Chatelet
b6bc9d72f6
[libc] Mass replace enclosing namespace ( #67032 )
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This is step 4 of
https://discourse.llvm.org/t/rfc-customizable-namespace-to-allow-testing-the-libc-when-the-system-libc-is-also-llvms-libc/73079
2023-09-26 11:45:04 +02:00
Michael Jones
04a9c62554
[libc] move stdlib and stdio to new errno pattern
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Fixes https://github.com/llvm/llvm-project/issues/61071
Reviewed By: sivachandra
Differential Revision: https://reviews.llvm.org/D145191
2023-03-03 11:15:36 -08:00
Michael Jones
cb3c41c285
[libc] Refactor string to float return values
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The internal implementation of the string to float function previously
used pointer arguments for returning several values. Additionally it
set errno in several unexpected places. Now all of that goes through
return structs. For readability I also moved the function away from raw
pointer arithmetic towards proper indexing. I also added support for
rounding modes.
Reviewed By: sivachandra
Differential Revision: https://reviews.llvm.org/D144597
2023-02-28 10:50:43 -08:00
Michael Jones
87c016078a
[libc] add atof, strtof and strtod
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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/D109261
2021-10-18 16:10:03 -07:00
