# HG changeset patch
# User Tuomo Valkonen <tuomov@iki.fi>
# Date 1638784330 -7200
# Node ID a60d2f12ef93e9af5463cbd62ad8d794ba1dd0c2
# Parent  186b0a2864313a14c76895f4544336f73b0d3f2f
Split FunctionalProgramming.jl, VectorMath.jl, and ThreadUtil.jl out of Util.jl.

diff -r 186b0a286431 -r a60d2f12ef93 src/AlgTools.jl
--- a/src/AlgTools.jl	Wed Dec 15 10:35:57 2021 +0200
+++ b/src/AlgTools.jl	Mon Dec 06 11:52:10 2021 +0200
@@ -1,12 +1,31 @@
 
 __precompile__()
 
+"""
+
+`module AlgTools`
+
+This module has the submodules:
+- `FunctionalProgramming`
+- `StructTools`
+- `LinkedLists`
+- `Logger`
+- `Iterate`
+- `VectorMath`
+- `Util`
+- `ThreadUtil`
+- `Comms`
+- `LinOps`
+- `DifferentiableFN`
+"""
 module AlgTools
 
 include("StructTools.jl")
 include("LinkedLists.jl")
 include("Iterate.jl")
+include("VectorMath.jl")
 include("Util.jl")
+include("ThreadUtil.jl")
 include("Comms.jl")
 include("LinOps.jl")
 include("DifferentiableFN.jl")
diff -r 186b0a286431 -r a60d2f12ef93 src/FunctionalProgramming.jl
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/FunctionalProgramming.jl	Mon Dec 06 11:52:10 2021 +0200
@@ -0,0 +1,60 @@
+###################################
+# Tools for functional programming
+###################################
+
+"""
+
+`module AlgTools.FunctionalProgramming`
+
+This module implements:
+- `curry`
+- `curryflip`
+"""
+module FunctionalProgramming
+
+##############
+# Our exports
+##############
+
+export curry,
+       curryflip
+
+###########
+# Currying
+###########
+
+"""
+`curry(f)` and `curry(f, x)`
+
+From a function `f` of parameters `(x, y...; kwargs...)` construct a function `g`
+of parameter `x`, returning a function of parameter `(y...; kwargs...)`.
+
+The version with parameter `x` already applies the first argument, returning a function
+of `(y...; kwargs...)`.
+"""
+function curry(f::Function)
+    return x -> (y...; kwargs...)-> f(x, y...; kwargs...)
+end
+
+function curry(f::Function, x)
+    return (y...; kwargs...)-> f(x, y...; kwargs...)
+end
+
+"""
+`curryflip(f)` and `curryflip(f, y...; kwargs...)
+
+From a function `f` of parameters `(x, y...; kwargs...)` construct a function `g`
+of parameter `(y...; kargs...)`, returning a function of parameter `x`
+
+The version with parametesr `(y...; kwargs...)` already applies these parameters,
+returning a function of `x`.
+"""
+function curryflip(f::Function)
+    return (y...; kwargs...) -> x -> f(x, y...; kwargs...)
+end
+
+function curryflip(f::Function, y...; kwargs...)
+    return x ->f(x, y...; kwargs...)
+end
+
+end # module
diff -r 186b0a286431 -r a60d2f12ef93 src/ThreadUtil.jl
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/ThreadUtil.jl	Mon Dec 06 11:52:10 2021 +0200
@@ -0,0 +1,46 @@
+###########################
+# Some threading utilities
+###########################
+
+__precompile__()
+
+module ThreadUtil
+
+##############
+# Our exports
+##############
+
+export @threadsif,
+       @background,
+       @backgroundif
+
+
+##########
+# Threads
+##########
+
+macro threadsif(threads, loop)
+    return esc(:(if $threads
+                    Threads.@threads $loop
+                else
+                    $loop
+                end))
+end
+
+macro background(bgtask, fgtask)
+    return :(t = Threads.@spawn $(esc(bgtask));
+             $(esc(fgtask));
+             wait(t))
+end
+
+macro backgroundif(threads, bgtask, fgtask)
+    return :(if $(esc(threads))
+                @background $(esc(bgtask)) $(esc(fgtask))
+            else
+                $(esc(bgtask))
+                $(esc(fgtask))
+            end)
+end
+
+end # Module
+
diff -r 186b0a286431 -r a60d2f12ef93 src/Util.jl
--- a/src/Util.jl	Wed Dec 15 10:35:57 2021 +0200
+++ b/src/Util.jl	Mon Dec 06 11:52:10 2021 +0200
@@ -12,57 +12,7 @@
 
 export map_first_slice!,
        reduce_first_slice,
-       norm₁,
-       norm₂,
-       γnorm₂,
-       norm₂w,
-       norm₂²,
-       norm₂w²,
-       norm₂₁,
-       γnorm₂₁,
-       dot,
-       mean,
-       proj_norm₂₁ball!,
-       proj_nonneg!,
-       curry,
-       ⬿,
-       @threadsif,
-       @background,
-       @backgroundif
-
-
-##########
-# Threads
-##########
-
-macro threadsif(threads, loop)
-    return esc(:(if $threads
-                    Threads.@threads $loop
-                else
-                    $loop
-                end))
-end
-
-macro background(bgtask, fgtask)
-    return :(t = Threads.@spawn $(esc(bgtask));
-             $(esc(fgtask));
-             wait(t))
-end
-
-macro backgroundif(threads, bgtask, fgtask)
-    return :(if $(esc(threads))
-                @background $(esc(bgtask)) $(esc(fgtask))
-            else
-                $(esc(bgtask))
-                $(esc(fgtask))
-            end)
-end
-
-########################
-# Functional programming
-#########################
-
-curry = (f::Function,y...)->(z...)->f(y...,z...)
+       ⬿
 
 ###############################
 # For working with NamedTuples
@@ -94,121 +44,5 @@
     return accum
 end
 
-###########################
-# Norms and inner products
-###########################
-
-@inline function dot(x, y)
-    @assert(length(x)==length(y))
-
-    accum=0
-    for i=1:length(y)
-        @inbounds accum += x[i]*y[i]
-    end
-    return accum
-end
-
-@inline function norm₂w²(y, w)
-    #Insane memory allocs
-    #return @inbounds sum(i -> y[i]*y[i]*w[i], 1:length(y))
-    accum=0
-    for i=1:length(y)
-        @inbounds accum=accum+y[i]*y[i]*w[i]
-    end
-    return accum
-end
-
-@inline function norm₂w(y, w)
-    return √(norm₂w²(y, w))
-end
-
-@inline function norm₂²(y)
-    #Insane memory allocs
-    #return @inbounds sum(i -> y[i]*y[i], 1:length(y))
-    accum=0
-    for i=1:length(y)
-        @inbounds accum=accum+y[i]*y[i]
-    end
-    return accum
-end
-
-@inline function norm₂(y)
-    return √(norm₂²(y))
-end
-
-@inline function norm₁(y)
-    accum=0
-    for i=1:length(y)
-        @inbounds accum=accum+abs(y[i])
-    end
-    return accum
-end
-
-@inline function γnorm₂(y, γ)
-    hubersq = xsq -> begin
-        x=√xsq
-        return if x > γ
-            x-γ/2
-        elseif x<-γ
-            -x-γ/2
-        else
-            xsq/(2γ)
-        end
-    end
-
-    if γ==0
-        return norm₂(y)
-    else
-        return hubersq(norm₂²(y))
-    end
-end
-
-function norm₂₁(y)
-    return reduce_first_slice((s, x) -> s+norm₂(x), y)
-end
-
-function γnorm₂₁(y,γ)
-    return reduce_first_slice((s, x) -> s+γnorm₂(x, γ), y)
-end
-
-function mean(v)
-    return sum(v)/prod(size(v))
-end
-
-@inline function proj_norm₂₁ball!(y, α)
-    α²=α*α
-
-    if ndims(y)==3 && size(y, 1)==2
-        @inbounds for i=1:size(y, 2)
-            @simd for j=1:size(y, 3)
-                n² = y[1,i,j]*y[1,i,j]+y[2,i,j]*y[2,i,j]
-                if n²>α²
-                    v = α/√n²
-                    y[1, i, j] *= v
-                    y[2, i, j] *= v
-                end
-            end
-        end
-    else
-        y′=reshape(y, (size(y, 1), prod(size(y)[2:end])))
-
-        @inbounds @simd for i=1:size(y′, 2)# in CartesianIndices(size(y)[2:end])
-            n² = norm₂²(@view(y′[:, i]))
-            if n²>α²
-                @views y′[:, i] .*= (α/√n²)
-            end
-        end
-    end
-end
-
-@inline function proj_nonneg!(y)
-    @inbounds @simd for i=1:length(y)
-        if y[i] < 0
-            y[i] = 0
-        end
-    end
-    return y
-end
-
 end # Module
 
diff -r 186b0a286431 -r a60d2f12ef93 src/VectorMath.jl
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/VectorMath.jl	Mon Dec 06 11:52:10 2021 +0200
@@ -0,0 +1,147 @@
+###########################
+# Norms, projections, etc.
+###########################
+
+__precompile__()
+
+module VectorMath
+
+##############
+# Our exports
+##############
+
+export norm₁,
+       norm₂,
+       γnorm₂,
+       norm₂w,
+       norm₂²,
+       norm₂w²,
+       norm₂₁,
+       γnorm₂₁,
+       dot,
+       mean,
+       proj_norm₂₁ball!,
+       proj_nonneg!
+
+###########################
+# Norms and inner products
+###########################
+
+@inline function dot(x, y)
+    @assert(length(x)==length(y))
+
+    accum=0
+    for i=1:length(y)
+        @inbounds accum += x[i]*y[i]
+    end
+    return accum
+end
+
+@inline function norm₂w²(y, w)
+    #Insane memory allocs
+    #return @inbounds sum(i -> y[i]*y[i]*w[i], 1:length(y))
+    accum=0
+    for i=1:length(y)
+        @inbounds accum=accum+y[i]*y[i]*w[i]
+    end
+    return accum
+end
+
+@inline function norm₂w(y, w)
+    return √(norm₂w²(y, w))
+end
+
+@inline function norm₂²(y)
+    #Insane memory allocs
+    #return @inbounds sum(i -> y[i]*y[i], 1:length(y))
+    accum=0
+    for i=1:length(y)
+        @inbounds accum=accum+y[i]*y[i]
+    end
+    return accum
+end
+
+@inline function norm₂(y)
+    return √(norm₂²(y))
+end
+
+@inline function norm₁(y)
+    accum=0
+    for i=1:length(y)
+        @inbounds accum=accum+abs(y[i])
+    end
+    return accum
+end
+
+@inline function γnorm₂(y, γ)
+    hubersq = xsq -> begin
+        x=√xsq
+        return if x > γ
+            x-γ/2
+        elseif x<-γ
+            -x-γ/2
+        else
+            xsq/(2γ)
+        end
+    end
+
+    if γ==0
+        return norm₂(y)
+    else
+        return hubersq(norm₂²(y))
+    end
+end
+
+function norm₂₁(y)
+    return reduce_first_slice((s, x) -> s+norm₂(x), y)
+end
+
+function γnorm₂₁(y,γ)
+    return reduce_first_slice((s, x) -> s+γnorm₂(x, γ), y)
+end
+
+function mean(v)
+    return sum(v)/prod(size(v))
+end
+
+##############
+# Projections
+##############
+
+@inline function proj_norm₂₁ball!(y, α)
+    α²=α*α
+
+    if ndims(y)==3 && size(y, 1)==2
+        @inbounds for i=1:size(y, 2)
+            @simd for j=1:size(y, 3)
+                n² = y[1,i,j]*y[1,i,j]+y[2,i,j]*y[2,i,j]
+                if n²>α²
+                    v = α/√n²
+                    y[1, i, j] *= v
+                    y[2, i, j] *= v
+                end
+            end
+        end
+    else
+        y′=reshape(y, (size(y, 1), prod(size(y)[2:end])))
+
+        @inbounds @simd for i=1:size(y′, 2)# in CartesianIndices(size(y)[2:end])
+            n² = norm₂²(@view(y′[:, i]))
+            if n²>α²
+                @views y′[:, i] .*= (α/√n²)
+            end
+        end
+    end
+end
+
+@inline function proj_nonneg!(y)
+    @inbounds @simd for i=1:length(y)
+        if y[i] < 0
+            y[i] = 0
+        end
+    end
+    return y
+end
+
+end # Module
+