Converts a string to a guint64 value.
This function behaves like the standard strtoull() function
does in the C locale. It does this without actually
changing the current locale, since that would not be
thread-safe.
Note that input with a leading minus sign (-) is accepted, and will return
the negation of the parsed number, unless that would overflow a guint64
Critically, this means you cannot assume that a short fixed length input will
never result in a low return value, as the input could have a leading -.
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
locale-sensitive system strtoull() function.
If the correct value would cause overflow, G_MAXUINT64
is returned, and ERANGE is stored in errno.
If the base is outside the valid range, zero is returned, and
EINVAL is stored in errno.
If the string conversion fails, zero is returned, and endptr returns
nptr (if endptr is non-NULL).
Converts a string to a guint64 value. This function behaves like the standard strtoull() function does in the C locale. It does this without actually changing the current locale, since that would not be thread-safe.
Note that input with a leading minus sign (-) is accepted, and will return the negation of the parsed number, unless that would overflow a guint64 Critically, this means you cannot assume that a short fixed length input will never result in a low return value, as the input could have a leading -.
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 locale-sensitive system strtoull() function.
If the correct value would cause overflow, G_MAXUINT64 is returned, and ERANGE is stored in errno. If the base is outside the valid range, zero is returned, and EINVAL is stored in errno. If the string conversion fails, zero is returned, and endptr returns nptr (if endptr is non-NULL).