test_mulhi_u32_4()

bool autoresearch::simd_check::test_mulhi_u32_4 ( )

inline

Definition at line 510 of file AutoResearchSimd.h.

                               {
    // mulhi_u32_4: ((u64)a * (u64)b) >> 16 (unsigned)
    uint32_t a[4] = {0x00010000, 0x00020000, 0x00030000, 0x00008000};
    uint32_t b[4] = {0x00020000, 0x00030000, 0x00010000, 0x00008000};
    uint32_t output[4] = {0};
    store_u32_4(output, mulhi_u32_4(load_u32_4(a), load_u32_4(b)));
    if (output[0] != 0x00020000) return false;  // 1.0 * 2.0
    if (output[1] != 0x00060000) return false;  // 2.0 * 3.0
    if (output[2] != 0x00030000) return false;  // 3.0 * 1.0
    if (output[3] != 0x00004000) return false;  // 0.5 * 0.5
    return true;
}

Referenced by getTests().

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