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Rev 8666 Rev 8719
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ret
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ret
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;----------------------- in: ------------------------------
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;----------------------- in: ------------------------------
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;---------------------------- edi - pointer to vector -----
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;---------------------------- edi - pointer to vector -----
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;----------------------- out : none
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;----------------------- out : none
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normalize_vector:
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normalize_vector:
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if Ext = SSE2 | Ext = SSE | Ext = SSE3
 - 
 
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        movups  xmm0,[edi]
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        andps   xmm0,[zero_hgst_dd]
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        movups  xmm1,xmm0
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        mulps   xmm0,xmm0
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        movhlps xmm2,xmm0
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        addps   xmm0,xmm2
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        movaps  xmm2,xmm0
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        shufps  xmm2,xmm2,11100001b
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        addps   xmm0,xmm2
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        shufps  xmm0,xmm0,0
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        rsqrtps xmm0,xmm0
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        mulps   xmm0,xmm1
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        movlps  [edi],xmm0
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        movhlps xmm0,xmm0
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        movss   [edi+8],xmm0
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end if
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if 0 ; Ext >= SSE3
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if Ext >= SSE3
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        movups  xmm0,[edi]
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        movups  xmm0,[edi]
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        andps   xmm0,[zero_hgst_dd]
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        andps   xmm0,[zero_hgst_dd]
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        movups  xmm1,xmm0
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        movups  xmm1,xmm0
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        mulps   xmm0,xmm0
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        mulps   xmm0,xmm0
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        haddps  xmm0,xmm0
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        haddps  xmm0,xmm0
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        rsqrtps xmm0,xmm0
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        rsqrtps xmm0,xmm0
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        mulps   xmm0,xmm1
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        mulps   xmm0,xmm1
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        movlps  [edi],xmm0
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        movlps  [edi],xmm0
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        movhlps xmm0,xmm0
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        movhlps xmm0,xmm0
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        movss   [edi+8],xmm0
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        movss   [edi+8],xmm0
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end if
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else
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if Ext < SSE
 - 
 
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        fninit
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        fninit
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        fld     dword [edi+vec_x]
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        fld     dword [edi+vec_x]
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        fmul    st, st
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        fmul    st, st