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Synopsis:
    #include <mmintrin.h>
    __m64 _m_psllw(__m64 *m, __m64 *count);

Description:
    The 16-bit words in m are each independently shifted to the left by the
    scalar shift count in count.  The low-order bits of each element are
    filled with zeros.  The shift count is interpreted as unsigned.  Shift
    counts greater than 15 yield all zeros.

Returns:
    Shift left each 16-bit word in m by an amount specified in count while
    shifting in zeros.

Example:
    #include <stdio.h>
    #include <mmintrin.h>

    #define AS_WORDS "%4.4x %4.4x %4.4x %4.4x"
    #define AS_QWORD "%16.16Lx"

    __m64   a;
    __m64   b = { 0x3f04800300020001 };
    __m64   c = { 0x0000000000000002 };

    void main()
      {
        a = _m_psllw( b, c );
        printf( "m1="AS_WORDS"\n"
                "m2="AS_QWORD"\n"
                "mm="AS_WORDS"\n",
            b._16[3], b._16[2], b._16[1], b._16[0],
            c,
            a._16[3], a._16[2], a._16[1], a._16[0] );
      }

    produces the following:

    m1=3f04 8003 0002 0001
    m2=0000000000000002
    mm=fc10 000c 0008 0004

Classification:
    Intel

Systems:
    MACRO

See Also:
    _m_empty, _m_pslld, _m_pslldi, _m_psllq, _m_psllqi, _m_psllwi