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Removal of stats procs for openarray (use the RunningStat methodology)

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JamesP
2015-11-11 08:56:12 +10:00
parent 7d62b9fc1a
commit 0cf4e2603f
1 changed files with 0 additions and 20 deletions
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20
lib/pure/math.nim
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@@ -118,26 +118,6 @@ proc sum*[T](x: openArray[T]): T {.noSideEffect.} =
## If `x` is empty, 0 is returned.
for i in items(x): result = result + i
template toFloat(f: float): float = f
proc mean*[T](x: openArray[T]): float {.noSideEffect.} =
## Computes the mean of the elements in `x`, which are first converted to floats.
## If `x` is empty, NaN is returned.
## ``toFloat(x: T): float`` must be defined.
for i in items(x): result = result + toFloat(i)
result = result / toFloat(len(x))
proc variance*[T](x: openArray[T]): float {.noSideEffect.} =
## Computes the variance of the elements in `x`.
## If `x` is empty, NaN is returned.
## ``toFloat(x: T): float`` must be defined.
result = 0.0
var m = mean(x)
for i in items(x):
var diff = toFloat(i) - m
result = result + diff*diff
result = result / toFloat(len(x))
proc random*(max: int): int {.benign.}
## Returns a random number in the range 0..max-1. The sequence of
## random number is always the same, unless `randomize` is called