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Is there an MD5 Fixed Point where md5(x) == x?
...ou MD5("The quick brown fox jumps over the lazy dog") = 9e107d9d372bb6826bd81d3542a419d6
– Kip
Oct 25 '08 at 3:00
5
...
Why does changing 0.1f to 0 slow down performance by 10x?
..._0(%rip), %xmm1
---
> movabsq $0, %rcx
> cvtsi2ssq %rcx, %xmm1
81d76
< subss %xmm1, %xmm0
The cvtsi2ssq one being 10 times slower indeed.
Apparently, the float version uses an XMM register loaded from memory, while the int version converts a real int value 0 to float using the ...
Why would finding a type's initializer throw a NullReferenceException?
... qword ptr [r10+28h]
000007fe`8d450110 48bb1032531200000000 mov rbx,12533210h
000007fe`8d45011a 488b1b mov rbx,qword ptr [rbx]
000007fe`8d45011d 33d2 xor edx,edx
000007fe`8d45011f 488bc8 mov rcx,rax
000007fe`8d450122 e829452e58 call mscorlib_ni!Syst...
Why does struct alignment depend on whether a field type is primitive or user-defined?
...values.
– Jon Skeet
Jul 15 '14 at 9:21
1
I'm not quite sure where you get the "16 byte padding" f...
Set focus on TextBox in WPF from view model
...
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What are “connecting characters” in Java identifiers?
...TWiStErRob
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answered Aug 2 '12 at 8:59
Peter LawreyPeter Lawrey
486k6...
Is 'switch' faster than 'if'?
...18
.quad .LBB0_19
.quad .LBB0_20
.quad .LBB0_21
I can say that it is not using a jump table -- 4 comparison instructions are clearly visible:
13FE81C51 cmp qword ptr [rsp+30h],1
13FE81C57 je testSwitch+73h (13FE81C73h)
13FE81C59 cmp qword ptr [rsp+30h],2
13FE81...
What is the difference between quiet NaN and signaling NaN?
... == 0xFF, but they have fraction == 0.
For this reason, NaNs must set bit 21 to 1, otherwise it would not be possible to distinguish sNaN from positive infinity!
nanf() produces several different NaNs, so there must be multiple possible encodings:
7fc00000
7fc00001
7fc00002
Since nan0 is the sam...
Can't find the 'libpq-fe.h header when trying to install pg gem
... OSX suffices
– Ricardo Saporta
Jan 21 '15 at 8:12
4
@RicardoSaporta libpqxx installs postgresql ...
What does value & 0xff do in Java?
...
Ted HoppTed Hopp
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