// ネイピア数e
std::f64::consts::E
// 1/π
std::f64::consts::FRAC_1_PI
// 1/sqrt(2)
std::f64::consts::FRAC_1_SQRT_2
// 2/π
std::f64::consts::FRAC_2_PI
// 2/sqrt(π)
std::f64::consts::FRAC_2_SQRT_PI
// π/2
std::f64::consts::FRAC_PI_2
// π/3
std::f64::consts::FRAC_PI_3
// π/4
std::f64::consts::FRAC_PI_4
// π/6
std::f64::consts::FRAC_PI_6
// π/8
std::f64::consts::FRAC_PI_8
// ln(10)
std::f64::consts::LN_10
// ln(2)
std::f64::consts::LN_2
// log10(e)
std::f64::consts::LOG10_E
// log2(e)
std::f64::consts::LOG2_E
// π
std::f64::consts::PI
// sqrt(2)
std::f64::consts::SQRT_2
// Approximate number of significant digits in base 10.
std::f64::DIGITS
// Difference between 1.0 and the next largest representable number.
std::f64::EPSILON
// Infinity
std::f64::INFINITY
// Number of significant digits in base 2.
std::f64::MANTISSA_DIGITS
// Largest finite f64 value.
std::f64::MAX
// Maximum possible power of 10 exponent.
std::f64::MAX_10_EXP
// Maximum possible power of 2 exponent.
std::f64::MAX_EXP
// Smallest finite f64 value.
std::f64::MIN
// Minimum possible normal power of 10 exponent.
std::f64::MIN_10_EXP
// One greater than the minimum possible normal power of 2 exponent.
std::f64::MIN_EXP
// Smallest positive normal f64 value.
std::f64::MIN_POSITIVE
// Not a Number (NaN).
std::f64::NAN
// Negative infinity
std::f64::NEG_INFINITY
// The radix or base of the internal representation of f64.
std::f64::RADIX
