23 lines
476 B
Nim
23 lines
476 B
Nim
import std/math
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proc factorial(n: int): int =
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if n == 0 or n < 0:
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return 1
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else:
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return n * factorial(n - 1)
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proc sine(x: float): float =
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let n = 8
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# ^ Taylor will converge really quickly
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# notice that the factorial of 17 is
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# already pretty gigantic
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var acc = 0.0
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for i in 0..n:
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var k = 2*i + 1
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var taylor = pow(-1, i.float) * pow(x, k.float) / factorial(k).float
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acc = acc + taylor
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return acc
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echo factorial(17)
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echo sine(1.0)
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