下列常量由此扩展定义,且仅在此扩展编译入 PHP 或在运行时动态载入时可用。
GMP_ROUND_ZERO
(int) GMP_ROUND_PLUSINF
(int) GMP_ROUND_MINUSINF
(int) GMP_MSW_FIRST
(int) GMP_LSW_FIRST
(int) GMP_LITTLE_ENDIAN
(int) GMP_BIG_ENDIAN
(int) GMP_NATIVE_ENDIAN
(int) GMP_VERSION
(string)