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[libc][math][c++23] Add {,u}fromfp{,x}bf16 math functions (#153992)
This PR adds the following basic math functions for BFloat16 type along with the tests: - fromfpbf16 - fromfpxbf16 - ufromfpbf16 - ufromfpxbf16 --------- Signed-off-by: Krishna Pandey <[email protected]>
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‎libc/config/baremetal/aarch64/entrypoints.txt

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libc.src.math.fromfpbf16
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libc.src.math.fromfpxbf16
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libc.src.math.roundbf16
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libc.src.math.truncbf16
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libc.src.math.ufromfpbf16
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‎libc/config/baremetal/arm/entrypoints.txt

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‎libc/config/baremetal/riscv/entrypoints.txt

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‎libc/config/darwin/aarch64/entrypoints.txt

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libc.src.math.ufromfpbf16
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‎libc/config/darwin/x86_64/entrypoints.txt

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libc.src.math.fromfpbf16
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libc.src.math.fromfpxbf16
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libc.src.math.roundbf16
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‎libc/config/gpu/amdgpu/entrypoints.txt

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libc.src.math.fromfpbf16
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libc.src.math.fromfpxbf16
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‎libc/config/gpu/nvptx/entrypoints.txt

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‎libc/config/linux/aarch64/entrypoints.txt

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‎libc/config/linux/arm/entrypoints.txt

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‎libc/config/linux/riscv/entrypoints.txt

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libc.src.math.ufromfpxbf16
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