add fma arg to disable compiling with FMA#839
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edoyango wants to merge 1 commit intoNVIDIA:mainfrom
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This PR adapts my changes in numba/numba#10487 for this repo
closes #118 and numba/numba#2834 and partially addresses numba/numba#7719
This PR adds the fma flag to the cuda.jit decorator, which is passed onto nvvm options.
Setting this flag to False prevents the compiler from reordering operations to introduce FMAs. Very important for checking bitwise-reproducibility e.g. when comparing CPU and GPU results