Credit to @Mattw112IG who reported a bug, where the code didn't check for values of length under 3.
I blame Flow's insane dedication to declarative processing of "if()" statements (i.e. evaluating BOTH the true/false parts before returning one).
Here's the corrected version:
concat(
if(
greaterOrEquals(
variables('myFloat'),
1000000000
),
concat(
substring(
string(variables('myFloat')),
0,
max(0, sub(length(first(split(string(variables('myFloat')), '.'))), 9))
),
',',
substring(
string(variables('myFloat')),
max(0, sub(length(first(split(string(variables('myFloat')), '.'))), 9)),
min(3, length(string(variables('myFloat'))))
),
',',
substring(
string(variables('myFloat')),
max(0, sub(length(first(split(string(variables('myFloat')), '.'))), 6)),
min(3, length(string(variables('myFloat'))))
),
',',
substring(
first(split(string(variables('myFloat')), '.')),
max(0, sub(length(first(split(string(variables('myFloat')), '.'))), 3)),
min(3, length(first(split(string(variables('myFloat')), '.'))))
)
),
if(
greaterOrEquals(
variables('myFloat'),
1000000
),
concat(
substring(
string(variables('myFloat')),
0,
max(0, sub(length(first(split(string(variables('myFloat')), '.'))), 6))
),
',',
substring(
string(variables('myFloat')),
max(0, sub(length(first(split(string(variables('myFloat')), '.'))), 6)),
min(3, length(string(variables('myFloat'))))
),
',',
substring(
first(split(string(variables('myFloat')), '.')),
max(0, sub(length(first(split(string(variables('myFloat')), '.'))), 3)),
min(3, length(first(split(string(variables('myFloat')), '.'))))
)
),
if(
greaterOrEquals(
variables('myFloat'),
1000
),
concat(
substring(
string(variables('myFloat')),
0,
max(0, sub(length(first(split(string(variables('myFloat')), '.'))), 3))
),
',',
substring(
first(split(string(variables('myFloat')), '.')),
max(0, sub(length(first(split(string(variables('myFloat')), '.'))), 3)),
min(3, length(first(split(string(variables('myFloat')), '.'))))
)
),
first(split(string(variables('myFloat')), '.'))
)
)
),
'.',
if(
contains(string(variables('myFloat')), '.'),
concat(
last(split(string(variables('myFloat')), '.')),
if(
less(length(last(split(string(variables('myFloat')), '.'))), 2),
'0',
''
)
),
'00'
)
)
And the corrected version with number rounding, all inlined:
concat(if(greaterOrEquals(div(add(mul(variables('myFloat'),1000),sub(if(greaterOrEquals(mod(mul(variables('myFloat'),1000),10),5),10,0),mod(mul(variables('myFloat'),1000),10))),1000),1000000000),concat(substring(string(div(add(mul(variables('myFloat'),1000),sub(if(greaterOrEquals(mod(mul(variables('myFloat'),1000),10),5),10,0),mod(mul(variables('myFloat'),1000),10))),1000)),0,max(0, sub(length(first(split(string(div(add(mul(variables('myFloat'),1000),sub(if(greaterOrEquals(mod(mul(variables('myFloat'),1000),10),5),10,0),mod(mul(variables('myFloat'),1000),10))),1000)), '.'))), 9))),',',substring(string(div(add(mul(variables('myFloat'),1000),sub(if(greaterOrEquals(mod(mul(variables('myFloat'),1000),10),5),10,0),mod(mul(variables('myFloat'),1000),10))),1000)),max(0, sub(length(first(split(string(div(add(mul(variables('myFloat'),1000),sub(if(greaterOrEquals(mod(mul(variables('myFloat'),1000),10),5),10,0),mod(mul(variables('myFloat'),1000),10))),1000)), '.'))), 9)),min(3, length(string(div(add(mul(variables('myFloat'),1000),sub(if(greaterOrEquals(mod(mul(variables('myFloat'),1000),10),5),10,0),mod(mul(variables('myFloat'),1000),10))),1000))))),',',substring(string(div(add(mul(variables('myFloat'),1000),sub(if(greaterOrEquals(mod(mul(variables('myFloat'),1000),10),5),10,0),mod(mul(variables('myFloat'),1000),10))),1000)),max(0, sub(length(first(split(string(div(add(mul(variables('myFloat'),1000),sub(if(greaterOrEquals(mod(mul(variables('myFloat'),1000),10),5),10,0),mod(mul(variables('myFloat'),1000),10))),1000)), '.'))), 6)),min(3, length(string(div(add(mul(variables('myFloat'),1000),sub(if(greaterOrEquals(mod(mul(variables('myFloat'),1000),10),5),10,0),mod(mul(variables('myFloat'),1000),10))),1000))))),',',substring(first(split(string(div(add(mul(variables('myFloat'),1000),sub(if(greaterOrEquals(mod(mul(variables('myFloat'),1000),10),5),10,0),mod(mul(variables('myFloat'),1000),10))),1000)), '.')),max(0, sub(length(first(split(string(div(add(mul(variables('myFloat'),1000),sub(if(greaterOrEquals(mod(mul(variables('myFloat'),1000),10),5),10,0),mod(mul(variables('myFloat'),1000),10))),1000)), '.'))), 3)),min(3, length(first(split(string(div(add(mul(variables('myFloat'),1000),sub(if(greaterOrEquals(mod(mul(variables('myFloat'),1000),10),5),10,0),mod(mul(variables('myFloat'),1000),10))),1000)), '.')))))),if(greaterOrEquals(div(add(mul(variables('myFloat'),1000),sub(if(greaterOrEquals(mod(mul(variables('myFloat'),1000),10),5),10,0),mod(mul(variables('myFloat'),1000),10))),1000),1000000),concat(substring(string(div(add(mul(variables('myFloat'),1000),sub(if(greaterOrEquals(mod(mul(variables('myFloat'),1000),10),5),10,0),mod(mul(variables('myFloat'),1000),10))),1000)),0,max(0, sub(length(first(split(string(div(add(mul(variables('myFloat'),1000),sub(if(greaterOrEquals(mod(mul(variables('myFloat'),1000),10),5),10,0),mod(mul(variables('myFloat'),1000),10))),1000)), '.'))), 6))),',',substring(string(div(add(mul(variables('myFloat'),1000),sub(if(greaterOrEquals(mod(mul(variables('myFloat'),1000),10),5),10,0),mod(mul(variables('myFloat'),1000),10))),1000)),max(0, sub(length(first(split(string(div(add(mul(variables('myFloat'),1000),sub(if(greaterOrEquals(mod(mul(variables('myFloat'),1000),10),5),10,0),mod(mul(variables('myFloat'),1000),10))),1000)), '.'))), 6)),min(3, length(string(div(add(mul(variables('myFloat'),1000),sub(if(greaterOrEquals(mod(mul(variables('myFloat'),1000),10),5),10,0),mod(mul(variables('myFloat'),1000),10))),1000))))),',',substring(first(split(string(div(add(mul(variables('myFloat'),1000),sub(if(greaterOrEquals(mod(mul(variables('myFloat'),1000),10),5),10,0),mod(mul(variables('myFloat'),1000),10))),1000)), '.')),max(0, sub(length(first(split(string(div(add(mul(variables('myFloat'),1000),sub(if(greaterOrEquals(mod(mul(variables('myFloat'),1000),10),5),10,0),mod(mul(variables('myFloat'),1000),10))),1000)), '.'))), 3)),min(3, length(first(split(string(div(add(mul(variables('myFloat'),1000),sub(if(greaterOrEquals(mod(mul(variables('myFloat'),1000),10),5),10,0),mod(mul(variables('myFloat'),1000),10))),1000)), '.')))))),if(greaterOrEquals(div(add(mul(variables('myFloat'),1000),sub(if(greaterOrEquals(mod(mul(variables('myFloat'),1000),10),5),10,0),mod(mul(variables('myFloat'),1000),10))),1000),1000),concat(substring(string(div(add(mul(variables('myFloat'),1000),sub(if(greaterOrEquals(mod(mul(variables('myFloat'),1000),10),5),10,0),mod(mul(variables('myFloat'),1000),10))),1000)),0,max(0, sub(length(first(split(string(div(add(mul(variables('myFloat'),1000),sub(if(greaterOrEquals(mod(mul(variables('myFloat'),1000),10),5),10,0),mod(mul(variables('myFloat'),1000),10))),1000)), '.'))), 3))),',',substring(first(split(string(div(add(mul(variables('myFloat'),1000),sub(if(greaterOrEquals(mod(mul(variables('myFloat'),1000),10),5),10,0),mod(mul(variables('myFloat'),1000),10))),1000)), '.')),max(0, sub(length(first(split(string(div(add(mul(variables('myFloat'),1000),sub(if(greaterOrEquals(mod(mul(variables('myFloat'),1000),10),5),10,0),mod(mul(variables('myFloat'),1000),10))),1000)), '.'))), 3)),min(3, length(first(split(string(div(add(mul(variables('myFloat'),1000),sub(if(greaterOrEquals(mod(mul(variables('myFloat'),1000),10),5),10,0),mod(mul(variables('myFloat'),1000),10))),1000)), '.')))))),first(split(string(div(add(mul(variables('myFloat'),1000),sub(if(greaterOrEquals(mod(mul(variables('myFloat'),1000),10),5),10,0),mod(mul(variables('myFloat'),1000),10))),1000)), '.'))))),'.',if(contains(string(div(add(mul(variables('myFloat'),1000),sub(if(greaterOrEquals(mod(mul(variables('myFloat'),1000),10),5),10,0),mod(mul(variables('myFloat'),1000),10))),1000)), '.'),concat(last(split(string(div(add(mul(variables('myFloat'),1000),sub(if(greaterOrEquals(mod(mul(variables('myFloat'),1000),10),5),10,0),mod(mul(variables('myFloat'),1000),10))),1000)), '.')),if(less(length(last(split(string(div(add(mul(variables('myFloat'),1000),sub(if(greaterOrEquals(mod(mul(variables('myFloat'),1000),10),5),10,0),mod(mul(variables('myFloat'),1000),10))),1000)), '.'))), 2),'0','')),'00'))And the proof:
