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Do any JVM's JIT compilers generate code that uses vectorized floating point instructions?
... System.out.println("dotc(): " + (t3 - t2)/10000000 + " ns");
}
}
and Dot.h:
float ac[50], bc[50];
inline float dotc() {
float sum = 0;
for (int i = 0; i < 50; i++) {
sum += ac[i]*bc[i];
}
return sum;
}
We can compile and run that with JavaCPP using this comma...
How do I create a custom iOS view class and instantiate multiple copies of it (in IB)?
... am currently making an app that will have multiple timers, which are basically all the same.
4 Answers
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Visual Studio, Find and replace, regex
I am trying to replace all the #include "whatever.h" with #include <whatever.h> using find and replace functionality in Visual Studio 2005. I used the regex \#include \"[a-z\.h]+\" to find the include statement. But I am wondering how frame the replace regex.
...
How to convert java.util.Date to java.sql.Date?
I am trying to use a java.util.Date as input and then creating a query with it - so I need a java.sql.Date .
18 Answer...
App Inventor 2 BLE扩展源码分析 - WriteBytes vs WriteStrings 23字节硬编...
...p; 结束对于
返回 结果
// 发送时
当 按钮_发送.被点击 时
初始化局部变量 字节列表 = 字符串转字节列表(文本输入框_命令.文本)
调用 蓝牙LE1.WriteBytes(字节列表)
优点：无需修改源码，立即可...
How do you create a static class in C++?
...int buffer, int bitIndex);
// ...lots of great stuff
private:
// Disallow creating an instance of this object
BitParser() {}
};
BitParser.cpp
bool BitParser::getBitAt(int buffer, int bitIndex)
{
bool isBitSet = false;
// .. determine if bit is set
return isBitSet;
}
You can use t...
What are Vertex Array Objects?
...k of it as a geometry object. (As an old time SGI Performer programmer, I call them geosets.) The instance variables/members of the object are your vertex pointer, normal pointer, color pointer, attrib N pointer, ...
When a VAO is first bound, you assign these members by calling
glEnableClientStat...
Get the index of the object inside an array, matching a condition
...lorer, there's a polyfill on the linked page.
Performance note
Function calls are expensive, therefore with really big arrays a simple loop will perform much better than findIndex:
let test = [];
for (let i = 0; i < 1e6; i++)
test.push({prop: i});
let search = test.length - 1;...
How do I drop table variables in SQL-Server? Should I even do this?
...
Table variables are automatically local and automatically dropped -- you don't have to worry about it.
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How to compare 2 files fast using .NET?
Typical approaches recommend reading the binary via FileStream and comparing it byte-by-byte.
18 Answers
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