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12 lines
220 B
OCaml
12 lines
220 B
OCaml
let cutoff = 1.e-15
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(** Constants *)
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let pi = acos (-1.)
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let sq_pi = sqrt pi
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let sq_pi_over_two = sq_pi *. 0.5
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let pi_inv = 1. /. pi
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let two_over_sq_pi = 2. /. (sqrt pi)
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let a0 = 0.529_177_210_67
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let a0_inv = 1. /. a0
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