[CUDA] FP4 cast and reinterpret support #17708
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Following up on a previous PR, this PR introduces the cast and reinterpret support between `__nv_fp4_e2m1` and other dtypes. This PR also makes sure that the cast and reinterpret support vectorize.
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* [CUDA] FP4 cast and reinterpret support Following up on a previous PR, this PR introduces the cast and reinterpret support between `__nv_fp4_e2m1` and other dtypes. This PR also makes sure that the cast and reinterpret support vectorize. * change to float4_e2m1fn
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Following up on a previous PR, this PR introduces the cast and reinterpret support between
__nv_fp4_e2m1and other dtypes. This PR also makes sure that the cast and reinterpret support vectorize.