_mm_cvtps_pd
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Microsoft 专用
将较低两个单精度, a 的浮点值设置为,双精度浮点值。
__m128d _mm_cvtps_pd (__m128 a);
CVTPS2PD
返回值
r0 := (double) a0
r1 := (double) a1
要求
标题: emmintrin.h
特定于 Microsoft 的结尾