This function generates enough precision that converting
the string back using funcGLib.ascii_strtod gives the same machine-number
(on machines with IEEE compatible 64bit doubles). It is
guaranteed that the size of the resulting string will never
be larger than glib.types.ASCII_DTOSTR_BUF_SIZE bytes, including the terminating
nul character, which is always added.
Converts a graphene.types.PI_2 to a string, using the '.' as decimal point.
This function generates enough precision that converting the string back using funcGLib.ascii_strtod gives the same machine-number (on machines with IEEE compatible 64bit doubles). It is guaranteed that the size of the resulting string will never be larger than glib.types.ASCII_DTOSTR_BUF_SIZE bytes, including the terminating nul character, which is always added.