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authorJonathan Corbet <corbet@lwn.net>2023-05-04 01:47:22 +0300
committerJonathan Corbet <corbet@lwn.net>2023-06-12 15:33:40 +0300
commite790a4ce529041bb21ec0b69a38c1b92f29df2cf (patch)
tree56f44e5f8f8fe8d94d43a4bd7743e82e4e7889d6 /Documentation/arm/vfp
parentf1fcbaa18b28dec10281551dfe6ed3a3ed80e3d6 (diff)
downloadlinux-e790a4ce529041bb21ec0b69a38c1b92f29df2cf.tar.xz
arm: docs: Move Arm documentation to Documentation/arch/
Architecture-specific documentation is being moved into Documentation/arch/ as a way of cleaning up the top-level documentation directory and making the docs hierarchy more closely match the source hierarchy. Move Documentation/arm into arch/ (along with the Chinese equvalent translations). Cc: Maxime Coquelin <mcoquelin.stm32@gmail.com> Cc: Chen-Yu Tsai <wens@csie.org> Cc: Jernej Skrabec <jernej.skrabec@gmail.com> Cc: Samuel Holland <samuel@sholland.org> Cc: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Cc: Alim Akhtar <alim.akhtar@samsung.com> Cc: Alex Shi <alexs@kernel.org> Cc: linux-doc@vger.kernel.org Cc: linux-arm-kernel@lists.infradead.org Cc: linux-arch@vger.kernel.org Acked-by: Alexandre TORGUE <alexandre.torgue@foss.st.com> Reviewed-by: Yanteng Si <siyanteng@loongson.cn> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
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-===============================================
-Release notes for Linux Kernel VFP support code
-===============================================
-
-Date: 20 May 2004
-
-Author: Russell King
-
-This is the first release of the Linux Kernel VFP support code. It
-provides support for the exceptions bounced from VFP hardware found
-on ARM926EJ-S.
-
-This release has been validated against the SoftFloat-2b library by
-John R. Hauser using the TestFloat-2a test suite. Details of this
-library and test suite can be found at:
-
- http://www.jhauser.us/arithmetic/SoftFloat.html
-
-The operations which have been tested with this package are:
-
- - fdiv
- - fsub
- - fadd
- - fmul
- - fcmp
- - fcmpe
- - fcvtd
- - fcvts
- - fsito
- - ftosi
- - fsqrt
-
-All the above pass softfloat tests with the following exceptions:
-
-- fadd/fsub shows some differences in the handling of +0 / -0 results
- when input operands differ in signs.
-- the handling of underflow exceptions is slightly different. If a
- result underflows before rounding, but becomes a normalised number
- after rounding, we do not signal an underflow exception.
-
-Other operations which have been tested by basic assembly-only tests
-are:
-
- - fcpy
- - fabs
- - fneg
- - ftoui
- - ftosiz
- - ftouiz
-
-The combination operations have not been tested:
-
- - fmac
- - fnmac
- - fmsc
- - fnmsc
- - fnmul