[taler-docs] branch master updated: Added info about the built-in currency formatter (iOS)

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marc-stibane pushed a commit to branch master
in repository docs.

The following commit(s) were added to refs/heads/master by this push:
     new 06307c03 Added info about the built-in currency formatter (iOS)
06307c03 is described below

commit 06307c0335b8493d5faffa4a057ccd78f16ee017
Author: Marc Stibane <marc@taler.net>
AuthorDate: Wed Oct 4 17:37:00 2023 +0200

    Added info about the built-in currency formatter (iOS)
---
 design-documents/051-fractional-digits.rst | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/design-documents/051-fractional-digits.rst 
b/design-documents/051-fractional-digits.rst
index 99929f30..21930d1b 100644
--- a/design-documents/051-fractional-digits.rst
+++ b/design-documents/051-fractional-digits.rst
@@ -32,6 +32,12 @@ Usually, all these three numbers have the same value, which 
means that in case o
 cent/penny values (but not a fraction of those), these cents/pennies are 
always shown (even if they are 0) as two normal digits
 after the decimal separator, and fractions of a cent/penny are rendered as 
SuperScriptDigits, but only if they are not trailing zeroes.
 
+iOS has a built-in currency formatter, which knows how to deal with 
thousands-separators and where to apply them
+(e.g. India uses a mixture of hundreds and thousands instead of putting the 
separator after each 3 digits like western currencies).
+However, this formatter will round after two (or three) fractional digits and 
thus cannot be used for the whole amount.
+
+(please add information about Android and WebEx here)
+
 
 Proposed Solution
 =================
@@ -46,6 +52,12 @@ Proposed Solution
           let isCurrencyNameLeading: Bool             // true for “$ 3.50”; 
false for “3,50 €”
       }
 
+For iOS, we plan to format the integer part of the amount with the built-in 
currency formatter, then add the fractional part
+according to this document.
+
+(please add information about Android and WebEx here)
+
+
 
 Definition of Done
 ==================

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