Mercurial > projects > dstress
view run/a/asm_pfrsqrtit1_01_B.d @ 1288:61d7e32e70a8
partial inline asm review
author | thomask |
---|---|
date | Wed, 27 Dec 2006 11:59:19 +0000 |
parents | 7fbe1218b3b5 |
children | 7a397590d6e0 |
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// $HeadURL$ // $Date$ // $Author$ module dstress.run.a.asm_pfrsqrtit1_01_B; version(D_InlineAsm_X86){ version = runTest; }else version(D_InlineAsm_X86_64){ version = runTest; } version(runTest){ import addon.cpuinfo; int main(){ have3DNow!()(); float* a = (new float[2]).ptr; a[0] = 4.0f; a[1] = 0.5f; static if(size_t.sizeof == 4){ asm{ mov EAX, a; movq MM1, [EAX]; pfrsqrt MM0, MM1; pfrsqit1 MM0, MM1; movq [EAX], MM0; emms; } }else static if(size_t.sizeof == 8){ asm{ mov RAX, a; movq MM1, [RAX]; pfrsqrt MM0, MM1; pfrsqit1 MM0, MM1; movq [RAX], MM0; emms; } }else{ static assert(0, "unhandled pointer size"); } a[0] -= 1.001953f; if(a[0] < 0.0f){ a[0] = -a[0]; } if(a[0] > float.epsilon * (1 << 8)){ assert(0); } a[1] -= 1.001953f; if(a[1] < 0.0f){ a[1] = -a[1]; } if(a[1] > float.epsilon * (1 << 8)){ assert(0); } return 0; } }else{ pragma(msg, "DSTRESS{XPASS}: no inline ASM support"); static assert(0); }