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Changed `pow…` of ’Arithmetic.swift’ be implemented in terms of `powInPlace`

This commit is contained in:
Vincent Esche 2019-09-24 15:19:10 +02:00
parent 93c0e492bc
commit 3ee5748f87
1 changed files with 12 additions and 28 deletions
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36
Sources/Surge/Arithmetic/Arithmetic.swift
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@ -590,46 +590,30 @@ func exp2InPlace<X: UnsafeMutableMemoryAccessible>(_ lhs: inout X) where X.Eleme
/// - Warning: does not support memory stride (assumes stride is 1).
public func pow<X: UnsafeMemoryAccessible, Y: UnsafeMemoryAccessible>(_ lhs: X, _ rhs: Y) -> [Float] where X.Element == Float, Y.Element == Float {
return withUnsafeMemory(lhs, rhs) { lhsMemory, rhsMemory in
precondition(lhsMemory.stride == 1 && rhsMemory.stride == 1, "\(#function) does not support strided memory access")
var lhsCount = Int32(lhs.count)
var results = [Float](repeating: 0.0, count: lhs.count)
results.withUnsafeMutableBufferPointer { pointer in
vvpowf(pointer.baseAddress!, rhsMemory.pointer, lhsMemory.pointer, &lhsCount)
}
var results = Array(lhs)
powInPlace(&results, rhs)
return results
}
}
/// - Warning: does not support memory stride (assumes stride is 1).
public func pow<X: UnsafeMemoryAccessible, Y: UnsafeMemoryAccessible>(_ lhs: X, _ rhs: Y) -> [Double] where X.Element == Double, Y.Element == Double {
return withUnsafeMemory(lhs, rhs) { lhsMemory, rhsMemory in
precondition(lhsMemory.stride == 1 && rhsMemory.stride == 1, "\(#function) does not support strided memory access")
var lhsCount = Int32(lhs.count)
var results = [Double](repeating: 0.0, count: lhs.count)
results.withUnsafeMutableBufferPointer { pointer in
vvpow(pointer.baseAddress!, rhsMemory.pointer, lhsMemory.pointer, &lhsCount)
}
var results = Array(lhs)
powInPlace(&results, rhs)
return results
}
}
/// - Warning: Allocates a temporary array from `rhs` via `Array(repeating: rhs, count: lhs.count)`.
public func pow<X: UnsafeMemoryAccessible>(_ lhs: X, _ rhs: Float) -> [Float] where X.Element == Float {
let rhs = [Float](repeating: rhs, count: lhs.count)
return pow(lhs, rhs)
var results = Array(lhs)
powInPlace(&results, rhs)
return results
}
/// - Warning: Allocates a temporary array from `rhs` via `Array(repeating: rhs, count: lhs.count)`.
public func pow<X: UnsafeMemoryAccessible>(_ lhs: X, _ rhs: Double) -> [Double] where X.Element == Double {
let rhs = [Double](repeating: rhs, count: lhs.count)
return pow(lhs, rhs)
var results = Array(lhs)
powInPlace(&results, rhs)
return results
}
// MARK: - Power: In Place