Math

Package math implements custom Cosmos SDK math types used for arithmetic operations. Signed and unsigned integer types utilize Golang's standard library big integers types, having a maximum bit length of 256 bits.

Package mathext provides functions that supplement the golang math library.

Package maths provides shared interfaces and functions across all packages in the maths module.

Package datemath provides an expression language for relative dates based on Elasticsearch's date math. This package is useful for letting end-users describe dates in a simple format similar to Grafana and Kibana and for persisting them as relative dates. The expression starts with an anchor date, which can either be "now", or an ISO8601 date string ending with ||. This anchor date can optionally be followed by one or more date math expressions, for example: The supported time units are: This package aims to be a superset of Elasticsearch's expressions. That is, any datemath expression that is valid for Elasticsearch should evaluate in the same way here. In addition to the expressions supported by Elasticsearch, this package also supports business days, annual quarters, and fiscal years/quarters.

Package go3d is a performance oriented vector and matrix math package for 2D and 3D graphics. Every type has its own sub-package and is named T. So vec3.T is the 3D vector type. For every vector and matrix type there is a String() method and a Parse() function. Besides methods of T there are also functions in the packages, like vec3.Dot(a, b). Packages under the float64 directory are using float64 values instead of float32. Matrices are organized as arrays of columns which is also the way OpenGL expects matrices. DirectX expects "arrays of rows" matrices, use the Transpose() to convert. Methods that don't return a specific value, return a pointer to the struct to allow method call chaining. Example: Method names in the past tense return a copy of the struct instead of a pointer to it. Example: Documentation: http://godoc.org/github.com/ungerik/go3d

float32 math package. This library provides float32 counterparts for Go's float64 math functions. E.g.: The implementation partially uses assembly code (see, e.g., sqrtf_amd64.s) for fast computation. However, when no assembly implementation exists yet a generic implementation is used which uses Go's float64 math functions underneath. Note: the assembly code is not goinstallable on all platforms. Therefore, goinstall will compile the portable implementation. If you manually execute "make install", you will get the faster implementation.