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3d2f0e2c7c
* make more standard libraries work with `nimPreviewSlimSystem` * typo * part two * Delete specutils.nim * fixes more tests * more fixes * fixes tests * fixes three more tests * add formatfloat import * fix * last
24 lines
612 B
Nim
24 lines
612 B
Nim
import std/sums
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from math import pow
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import std/assertions
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var epsilon = 1.0
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while 1.0 + epsilon != 1.0:
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epsilon /= 2.0
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let data = @[1.0, epsilon, -epsilon]
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doAssert sumKbn(data) == 1.0
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# doAssert sumPairs(data) != 1.0 # known to fail in 64 bits
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doAssert (1.0 + epsilon) - epsilon != 1.0
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var tc1: seq[float]
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for n in 1 .. 1000:
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tc1.add 1.0 / n.float
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doAssert sumKbn(tc1) == 7.485470860550345
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doAssert sumPairs(tc1) == 7.485470860550345
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var tc2: seq[float]
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for n in 1 .. 1000:
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tc2.add pow(-1.0, n.float) / n.float
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doAssert sumKbn(tc2) == -0.6926474305598203
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doAssert sumPairs(tc2) == -0.6926474305598204
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