| X01AAC | nag_pi π |
| X01ABC | nag_euler_constant Euler's constant, γ |
| X02AHC | nag_max_sine_argument The largest permissible argument for sin and cos |
| X02AJC | nag_machine_precision The machine precision |
| X02AKC | nag_real_smallest_number The smallest positive model number |
| X02ALC | nag_real_largest_number The largest positive model number |
| X02AMC | nag_real_safe_small_number Safe range of floating-point arithmetic |
| X02ANC | nag_complex_safe_small_number Safe range of NAG complex floating-point arithmetic |
| X02BBC | nag_max_integer The largest representable integer |
| X02BEC | nag_decimal_digits The maximum number of decimal digits that can be represented |
| X02BHC | nag_real_base Parameter b of model of floating-point arithmetic |
| X02BJC | nag_real_base_digits Parameter p of model of floating-point arithmetic |
| X02BKC | nag_real_min_exponent Parameter emin of model of floating-point arithmetic |
| X02BLC | nag_real_max_exponent Parameter emax of model of floating-point arithmetic |
| X02DAC | nag_underflow_flag Switch for taking precautions to avoid underflow |
| X02DJC | nag_real_arithmetic_rounds Parameter ROUNDS of model of floating-point arithmetic |