log1p

At that time, a GSL log1p (x) code implementation was provided. However, I didn't want to understand why it was like that. I suddenly understood it when I read a post on shuimu recently. The Code on GSL is as follows: [Cpp] view plaincopyprint?

1,math.expm1 ()Math.expm1(x)Returns EX-1, i.e. Math.exp(x) - 1 .// -0.6321205588285577 MATH.EXPM1 (0) // 0math.expm1 (1) // 1.7182818284590452,math.log1p ()Math.log1p(x)1 + xthe natural logarithm returned by the method, that is Math.log(1 + x) .

This set of questions is cool. 250 Simple question. Can a number be expressed as the power of a prime number? I used a method with high precision loss. In fact, as long as the square is determined, it is OK to enumerate the prime numbers directly.

VIM simple tutorial (4) VIM simple tutorial (3) http://www.2cto.com/os/201303/194220.html Lesson 4 basic copy and paste operations cut and paste www.2cto.com when you use the command d or x to delete a paragraph of text, the deleted text will be

Using Python for data analysis--numpy basics: Arrays and Vector computing Ndarry, a multidimensional array with vector operations and complex broadcast capabilities for fast space-saving Standard mathematical function for fast

We can easily get help through the Python interpreter. If you want to know more about an object, you can call Help (object). There are also useful ways in which dir (object) displays most of the associated property names for that object, and Object._

The fourth lesson basic copy, paste operation Cut and paste When a piece of text is deleted with command D or x, the deleted text is automatically saved to a special clipboard by VIM. You can then use the P command (put) to paste it behind the

Based on NumPy, SCIPY provides many modules commonly used in mathematics, science and engineering calculation, and is a powerful numerical computing library.1. Constants and Special functionsSciPy's Constants module contains a number of physical

Https://mp.weixin.qq.com/s/JwRXBNmXBaQM2GK6BDRqMwSelected from GitHubArtur SuilinThe heart of the machine compilesParticipation: Shiyuan, Wall's, Huang Recently, Artur Suilin and other people released the Kaggle website Traffic Timing

dir([object])----can take parameters or without parameters 1. Returns a list of the types of variables, methods, and definitions within the current scope when no arguments are taken.>>>dir ()[' __annotations__ ', ' __builtins__ ', ' __doc__ ', '