GLibGINT64_FORMAT

This is the platform dependent conversion specifier for scanning and printing values of type #gint64. See also G_GINT16_FORMAT.

Some platforms do not support scanning and printing 64-bit integers, even though the types are supported. On such platforms G_GINT64_FORMAT is not defined. Note that scanf() may not support 64-bit integers, even if G_GINT64_FORMAT is defined. Due to its weak error handling, scanf() is not recommended for parsing anyway; consider using g_ascii_strtoull() instead.

This is not necessarily the correct format for printing and scanning int64_t values, even though the in-memory representation is the same. Standard C macros like PRId64 and SCNd64 should be used for int64_t.