Built-in function backends

Build-time choice of built-in functions, with or without libm. More...

Collaboration diagram for Built-in function backends:

Functions
void	g2basic_init_math_functions (void)
	Register the built-in functions of the selected backend.

Detailed Description

Build-time choice of built-in functions, with or without libm.

CMake compiles exactly one backend source, selected by G2BASIC_ENABLE_MATH_FUNCTIONS and G2BASIC_ENABLE_MATH:

Backend	..._FUNCTIONS	..._MATH	Registers	libm
g2basic_math.c	ON	ON	all 13	yes
g2basic_math_crude.c	ON	OFF	all 13, approximated	no
g2basic_math_none.c	OFF	any	min, max	no

The 13 functions are sin, cos, tan, sqrt, abs, pow, log, log10, exp, floor, ceil, min, and max. pow takes two arguments. min and max take up to eight and return 0 with none. The others take one.

Function Documentation

g2basic_init_math_functions()

void g2basic_init_math_functions

(

void

)

Register the built-in functions of the selected backend.

Called by g2basic_init() after it clears all registered functions. Host programs do not call it.