Converts a string to a #gdouble value.
This function behaves like the standard
does in the C locale. It does this without actually changing
the current locale, since that would not be thread-safe.
A limitation of the implementation is that this function
will still accept localized versions of infinities and NANs.
This function is typically used when reading configuration
files or other non-user input that should be locale independent.
To handle input from the user you should normally use the
To convert from a #gdouble to a string in a locale-insensitive way, use g_ascii_dtostr().
If the correct value would cause overflow, plus or minus
is returned (according to the sign of the value), and
stored in %errno. If the correct value would cause underflow,
zero is returned and
ERANGE is stored in %errno.
This function resets %errno before calling
strtod() so that
you can reliably detect overflow and underflow.
The string to convert to a numeric value.
The data is owned by the caller of the function. The value is a NUL terminated UTF-8 string.
NULL, it returns the character after the last character used in the conversion.
The argument will be set by the function. The argument can be
The data is owned by the function. The value is a NUL terminated UTF-8 string.