builtin

Documentation

Index

• Variables
• func FuncsInit()
• type Func
• type FuncMap

Variables

var Constants = map[string]interface{}{
	"nil":   nil,
	"inf":   math.Inf(0),
	"nan":   math.NaN(),
	"pi":    math.Pi,
	"e":     math.E,
	"true":  true,
	"false": false,
	"help":  "Enter expression you want to calc and press Enter to get the result.\n\tTo define a variable type its name and assign the value with '=' operator.\n\tType 'funcs()' to see all available functions.\n\tType 'vars()' to see all available variables.",
}

var Functions = FuncMap{
	"sin": Func{
		Args: "(x)",
		Desc: "Sine of the radian argument x",
		Exec: sin,
	},
	"cos": Func{
		Args: "(x)",
		Desc: "Cosine of the radian argument x",
		Exec: cos,
	},
	"pow": Func{
		Args: "(x,y)",
		Desc: "The base-x exponential of y",
		Exec: pow,
	},
	"sqrt": Func{
		Args: "(x)",
		Desc: "The square root of x",
		Exec: sqrt,
	},
	"exp": Func{
		Args: "(x)",
		Desc: "The base-e exponential of x",
		Exec: exp,
	},
	"round": Func{
		Args: "(x)",
		Desc: "The nearest integer, rounding half away from zero",
		Exec: round,
	},
	"ceil": Func{
		Args: "(x)",
		Desc: "The least integer value greater than or equal to x",
		Exec: ceil,
	},
	"floor": Func{
		Args: "(x)",
		Desc: "The greatest integer value less than or equal to x",
		Exec: floor,
	},
	"popcnt": {
		Args: "(x)",
		Desc: "The number of one bits (\"population count\") in x",
		Exec: popcount,
	},
	"vars": Func{
		Args: "()",
		Desc: "List available variables",
		Exec: vars,
	},
	"funcs": Func{
		Args: "()",
		Desc: "List alailable functions",
		Exec: funcs,
	},
	"save": Func{
		Args: "(id)",
		Desc: "Save working environment with id",
		Exec: save,
	},
	"load": Func{
		Args: "(id)",
		Desc: "Load working environment with id",
		Exec: load,
	},
	"clear": Func{
		Args: "()",
		Desc: "Clear screen",
		Exec: clear,
	},
	"exit": Func{
		Args: "(code)",
		Desc: "Exit with error code",
		Exec: exit,
	},
}

Functions

func FuncsInit

func FuncsInit()

Types

type Func

type Func struct {
	Args string
	Desc string
	Exec func(args ...interface{}) (interface{}, error)
}

type FuncMap

type FuncMap map[string]Func