Fast inverse square root, sometimes referred to as Fast InvSqrt() or by the hexadecimal constant 0x5f3759df, is an algorithm that estimates 1/√x, the reciprocal (or multiplicative inverse) of the square root of a 32-bit floating-point number x in IEEE 754 floating-point format. This operation is used in digital signal processing to normalize a vector, i.e., scale it to length 1. For example, computer graphics programs use inverse square roots to compute angles of incidence and reflection for lighting and shading. The algorithm is best known for its implementation in 1999 in the source code of Quake...

Fast inverse square root, sometimes referred to as Fast InvSqrt() or by the hexadecimal constant 0x5f3759df, is an algorithm that estimates 1/√x, the reciprocal (or multiplicative inverse) of the square root of a 32-bit floating-point number x in IEEE 754 floating-point format. This operation is used in digital signal processing to normalize a vector, i.e., scale it to length 1. For example, computer graphics programs use inverse square roots to compute angles of incidence and reflection for lighting and shading. The algorithm is best known for its implementation in 1999 in the source code of Quake...

The 14 British Overseas Territories (BOT) are territories under the jurisdiction and sovereignty of the United Kingdom. They are the parts of the British Empire that have not been granted independence or have voted to remain British territories. These territories do not form part of the United Kingdom and, with the exception of Gibraltar, are not part of the European Union. Most of the inhabited territories are internally self-governing, with the UK retaining responsibility for defence and foreign relations. The rest are either uninhabited or have a transitory population of military or scientific...

The Man Who Fell to Earth is a 1963 science fiction novel by American author Walter Tevis, about an extraterrestrial who lands on Earth seeking a way to ferry his people to Earth from his home planet, which is suffering from a severe drought. The novel served as the basis for the 1976 film by Nicolas Roeg, The Man Who Fell to Earth, as well as a 1987 television adaptation. == Plot summary == Thomas Jerome Newton is a humanoid alien who comes to Earth seeking to construct a spaceship to ferry others from his home planet, Anthea, to Earth. Anthea is experiencing a terrible drought after many nuclear...