Format a float number as a pretty string:

import FormatNumber.Locales exposing (Decimals(..), Locale, System(..), frenchLocale, spanishLocale, usLocale)


format { decimals = Exact 2, system = Western, thousandSeparator = ".", decimalSeparator = ",", negativePrefix = "−", negativeSuffix = "", positivePrefix = "", positiveSuffix = "", zeroPrefix = "", zeroSuffix = "" } 123456.789
--> "123.456,79"


format { decimals = Exact 2, system = Western, thousandSeparator = ",", decimalSeparator = ".", negativePrefix = "−", negativeSuffix = "", positivePrefix = "", positiveSuffix = "", zeroPrefix = "", zeroSuffix = "" } 1234.5567
--> "1,234.56"


format (Locale (Exact 3) Western "." "," "−" "" "" "" "" "") -7654.3210
--> "−7.654,321"


format (Locale (Exact 1) Western "," "." "−" "" "" "" "" "") -0.01
--> "0.0"


format (Locale (Exact 2) Western "," "." "−" "" "" "" "" "") 0.01
--> "0.01"


format (Locale (Exact 0) Western "," "." "−" "" "" "" "" "") 123.456
--> "123"


format (Locale (Exact 0) Western "," "." "−" "" "" "" "" "") 1e9
--> "1,000,000,000"


format (Locale (Exact 5) Western "," "." "−" "" "" "" "" "") 1.0
--> "1.00000"


format (Locale (Exact 2) Western "," "." "(" ")" "" "" "" "") -1.0
--> "(1.00)"


format usLocale pi
--> "3.14"


format { frenchLocale | decimals = Exact 4 } pi
--> "3,1416"


format frenchLocale 67295
--> "67 295,000"


format spanishLocale e
--> "2,718"


format spanishLocale 67295
--> "67.295,000"


format usLocale 67295
--> "67,295.00"


format spanishLocale -0.1
--> "−0,100"


format spanishLocale -0.00099
--> "−0,001"


format usLocale 1e10
--> "10,000,000,000.00"


format usLocale -1e10
--> "−10,000,000,000.00"


format { usLocale | negativePrefix = "-" } -1.0
--> "-1.00"


format { usLocale | positivePrefix = "+" } 1.0
--> "+1.00"


format { usLocale | positiveSuffix = "+" } 1.0
--> "1.00+"


format usLocale 7.34767309e22
--> "73,476,730,900,000,000,000,000.00"


format usLocale 7.34767309e+22
--> "73,476,730,900,000,000,000,000.00"


format usLocale 7.34767309e-22
--> "0.00"


format (Locale (Exact 3) Western "." "," "−" "" "" "" "" "") 123
--> "123,000"


format (Locale (Min 3) Western "." "," "−" "" "" "" "" "") 123.45678
--> "123,45678"


format (Locale (Min 0) Western "." "," "−" "" "" "" "" "") 1230
--> "1.230"


format (Locale (Min 3) Western "." "," "−" "" "" "" "" "") 123.45600
--> "123,456"


format (Locale (Min 3) Western "." "," "−" "" "" "" "" "") 123.456001
--> "123,456001"


format (Locale (Max 3) Western "." "," "−" "" "" "" "" "") 123.45678
--> "123,457"


format (Locale (Max 3) Western "." "," "−" "" "" "" "" "") 123.45633
--> "123,456"


format (Locale (Max 3) Western "." "," "−" "" "" "" "" "") 123.45600
--> "123,456"


format (Locale (Max 3) Western "." "," "−" "" "" "" "" "") 123.45
--> "123,45"


format (Locale (Max 3) Western "." "," "−" "" "" "" "" "") 123
--> "123"


format { usLocale | system = Indian } 7.34767309e22
--> "73,47,67,30,90,00,00,00,00,00,000.00"


format { usLocale | system = Indian } 75
--> "75.00"