Home » Developing U++ » U++ Developers corner » "better" version of Iscale functions
| Re: "better" version of Iscale functions [message #15168 is a reply to message #15167] |
Sun, 06 April 2008 20:14   |
mdelfede
Messages: 1308
Registered: September 2007
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Ultimate Contributor |
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... and, just because I'm curious, that's the -O3 full optimized GCC assembly code :
movslq %edi,%rax
movslq %esi,%rsi
movslq %edx,%rdx
imulq %rsi, %rax
movq %rdx, %rcx
movq %rax, %rdx
sarq $63, %rdx
idivq %rcx
ret
Well, I could say that's just 2-3 mov's ahead from by hand assembly code....
Max
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"better" version of Iscale functions
By: mdelfede on Tue, 01 April 2008 23:10 |
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Re: "better" version of Iscale functions
By: mirek on Wed, 02 April 2008 15:11 |
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Re: "better" version of Iscale functions
By: mdelfede on Wed, 02 April 2008 16:48 |
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Re: "better" version of Iscale functions
By: mirek on Sun, 06 April 2008 04:47 |
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Re: "better" version of Iscale functions
By: mdelfede on Sun, 06 April 2008 19:36 |
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Re: "better" version of Iscale functions
By: mdelfede on Sun, 06 April 2008 20:05 |
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Re: "better" version of Iscale functions
By: mdelfede on Sun, 06 April 2008 20:14 |
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Re: "better" version of Iscale functions
By: mirek on Thu, 10 April 2008 02:44 |
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Re: "better" version of Iscale functions
By: mirek on Thu, 10 April 2008 02:46 |
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Re: "better" version of Iscale functions
By: mdelfede on Thu, 10 April 2008 15:07 |
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Re: "better" version of Iscale functions
By: mirek on Thu, 10 April 2008 18:01 |
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Re: "better" version of Iscale functions
By: mdelfede on Fri, 11 April 2008 09:26 |
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Re: "better" version of Iscale functions
By: mirek on Sun, 06 April 2008 04:51 |
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