[ CCode ( cname = "g_ascii_formatd" , instance_pos = -1 ) ]
public unowned string format (char[] buffer, string format = "%g")
Converts a double to a string, using the '.
' as decimal point. To format the number you pass in a printf-style format string. Allowed conversion specifiers are 'e', 'E', 'f', 'F', 'g' and 'G'.
The format must just be a single format specifier starting with `%`, expecting a double
argument.
The returned buffer is guaranteed to be nul-terminated.
If you just want to want to serialize the value into a string, use to_str.
| buffer |
A buffer to place the resulting string in |
| format |
The printf-style format to use for the code to use for converting |
| buf_len |
The length of the buffer. |
| d |
The double to convert |
|
The pointer to the buffer with the converted string. |