devlinzhou/deterministic_float: fast soft float-point for deterministic computing，高性能、一致性计算的软件浮点数 · GitHub

Cross-platform deterministic float point, fast soft float point.

Fast soft float point for deterministic computing, That you can make deterministic plugin by use GFloat to replace float-point. like：

• Physics Engine (Bullet、PhysX)
• AI Path Finding (Recast Navigation)
• AI Engine

Compare the overall performance of hard float IEEE-754 and GFloat numbers, They differ by no more than 500%, Refer to the multiply-add instructions for measuring the computing power of the graphics card. compare multiply and add function:

跨平台的确定性浮点数，高性能的软件浮点数

你可以使用GFloat替代各种中间件的浮点数，从而实现带确定性的计算，实现帧同步游戏逻辑，也可以实现加密货币计算逻辑，例如：

• 物理引擎（Bullet、PhysX）
• AI 寻路（Recast Navigation）
• AI 引擎

整体上GFloat与IEEE754的硬件浮点数float，性能差距在500%以内。参考显卡衡量计算能力的乘加指令，主要比较乘法和加法函数的性能：

IEEE-754 float

• $\mathbf{X}_{IEEE754} = (-1)^\mathbf{sign} \times (1.\mathbf{fraction}) \times 2 ^{\mathbf{exponent} - 127}$

GFloat

• $\mathbf{X}_{GFloat} = (-1)^\mathbf{sign} \times (\mathbf{fraction}) \times 2 ^{\mathbf{exponent} - 127}$