to_str

Converts a double to a string, using the '.

' as decimal point.

This function generates enough precision that converting the string back using 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 g_ascii_dtostr_buf_size bytes, including the terminating nul character, which is always added.

Example: Double to string (with buffer):

public static int main (string[] args) {
	// Output: ``20``
	char[] buf = new char[double.DTOSTR_BUF_SIZE];
	unowned string str = (20.0).to_str (buf);
	print ("%s\n", str);
	return 0;
}

valac --pkg glib-2.0 double.to_str.vala

Parameters:

buffer	A buffer to place the resulting string in
buf_len	The length of the buffer.
d	The double to convert

Returns:

The pointer to the buffer with the converted string.