Optimize Vectorized<float> exp() with neon simd instructions #126612
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Optimize
Vectorized<float> exp()
with neon simd instructions, copy from the implementation https://github.com/ARM-software/optimized-routines/blob/master/math/aarch64/v_expf.c with minor changes.cc @jgong5 @mingfeima @XiaobingSuper @sanchitintel @ashokei @jingxu10