PHP Math function Summary (classic worth collecting), PHP is worth collecting
This paper summarizes and analyzes the mathematical operation function of PHP. Share to everyone for your reference, as follows:
First, the common function
ABS ()
Seek absolute value
ACOs ()
Seeking the inverse cosine
ASIN ()
Ask for the inverse of the string
Atan ()
Ask for anyway cut
ATAN2 ()
To find the tangent, to
In the process of programming, we often perform mathematical operations on some numbers, such as what we want to ask for absolute or cosine. Do these methods need to be implemented by ourselves? In fact, the math class math class in Java.lang
0.033 seconds of art ---- traps in the xNa Math Library
For personal use only, do not reprint, do not use for any commercial purposes.
Last timeDescribes how to view. netProgramASMCodeAnd analyzes some functions under system. Math. This time,
This is a standard C arithmetic library. All functions are stored in the Math Table.
1. Math. Abs (X)
Function: returns the absolute value of X.
2. Math. ACOs (X)
Function: returns the arc cosine of X. The value x must be between-1 and 1.
3. Math.
Python development [front-end]: JavaScript, pythonjavascriptJavaScript is a literal-literal scripting language. It is a dynamic, weak, prototype-based language with built-in support. Its Interpreter, called the JavaScript engine, is a part of the
Js Code
Copy codeThe Code is as follows:
[Code]
In normal calculation, except for the first line (because it cannot be used apart), the rest should get accurate results, from the pop-up results, we found that it was not the correct result we
Base_convert ($number, $frombase, $tobase)//Convert a number between arbitrary binariesCeil ($float)//Up roundingFloor ($float)//Down roundingEXP ($float)//calculate E's exponentHypot ($x, $y)//Calculate the hypotenuse length of right triangleIs_nan
You do not need to pass parameters or return parameters.
We know that the most intuitive way to start a thread is to use the Thread class. The specific steps are as follows:
Threadstart = new threadstart (calculate );Thread thread = new thread
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