@brief returns a const reverse iterator to the last element @sa https://json.nlohmann.me/api/basic_json/crbegin/

生成圆柱体网格，轴向为z轴 Args: center: 圆柱体中心坐标 [x,y,z] radius: 圆柱体半径 height: 圆柱体高度 segments: 圆周细分段数 Returns: vert

生成球体网格 Args: center: 球心坐标 [x,y,z] radius: 球体半径 segments: 细分段数 Returns: vertices: 顶点坐标数组 triangles: 三角形

@brief returns a const reverse iterator to one before the first @sa https://json.nlohmann.me/api/basic_json/crend/

! @brief dump a floating-point number Dump a given floating-point number to output stream @a o. Works internally with @a number_buffer.

Assemble A in cuda end

Fill dense array form gradC into a sparse matrix G. Parameters ---------- gradC: taichi vector field, shape=(NCONS,2), n=3

! For n != 0, returns k, such that pow10 := 10^(k-1) <= n < 10^k. For n == 0, returns 1 and sets pow10 := 1. */

! For a normalized diyfp w = f * 2^e, this function returns a (normalized) cached power-of-ten c = f_c * 2^e_c, such that the exponent of the product

! Generates V = buffer * 10^decimal_exponent, such that M- <= V <= M+. M- and M+ must be normalized and share the same exponent -60 <= e <= -32. */