Tag：Fixedpoint number

Time：2021510
This article is updated on June 19, 2019, using MySQL 5.7 and operating system deepin 15.4. catalogue value type Integer type Fixed point number type Floating Point Types Bit type Date time type String type Enumeration type Collection type value type Integer type type[(m)] [UNSIGNED] [ZEROFILL] [AUTO_INCREMENT] type byte minimum value Maximum TINYINT 1 Signed […]

Time：2021128
This article is about my GBA library lib_ The fixedpoint part of Mathematical Library in HL. What is the fixed number? Why use fixed points? In the previous article, I have introduced the hardware of GBA, and its CPU has no floatingpoint unit! What I want to write is a ray tracing program, […]

Time：20201210
This blog will elaborate and discuss the following contents: ●int The range of int varies between 16 bits or 32 bits according to different computers. Take 16 bits for example. The maximum value is 1111111111111, that is 65535. If 65536 occurs, it will overflow. ●Signed int Taking a 16 bit system as an example, […]

Time：2020415
This paper simply tests the multiplication and division performance of fixedpoint numbers and builtin floatingpoint numbers implemented by 16 bit integers and 32bit integers respectively in C language Cycle 1 0000 0000 * 20 times under release: CPU：7700K/4.2Ghz The fixedpoint number is realized as follows: Fp16: int operation in essence Fp32: long long operation […]