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[lmi-commits] [lmi] valyuta/002 420fac7 08/14: Allow currency to be doll
From: |
Greg Chicares |
Subject: |
[lmi-commits] [lmi] valyuta/002 420fac7 08/14: Allow currency to be dollars rather than cents |
Date: |
Thu, 17 Sep 2020 16:27:15 -0400 (EDT) |
branch: valyuta/002
commit 420fac7eccb1018f71c0f2efb5bb51754b19b0f3
Author: Gregory W. Chicares <gchicares@sbcglobal.net>
Commit: Gregory W. Chicares <gchicares@sbcglobal.net>
Allow currency to be dollars rather than cents
Dollars and hundredths requires a floating-point currency::data_type.
Writing an '#error' directive here is better than letting a downstream
runtime assertion in 'round_to.hpp' fail as it inescapably would.
---
currency.hpp | 11 +++++++++++
1 file changed, 11 insertions(+)
diff --git a/currency.hpp b/currency.hpp
index 4321525..fa83e7a 100644
--- a/currency.hpp
+++ b/currency.hpp
@@ -32,8 +32,14 @@
#include <iostream> // ostream
#include <vector>
+#define CURRENCY_UNIT_IS_CENTS
+
#define CURRENCY_HAS_INTEGER_DATATYPE
+#if !defined CURRENCY_UNIT_IS_CENTS && defined CURRENCY_HAS_INTEGER_DATATYPE
+# error No can do!
+#endif // !defined CURRENCY_UNIT_IS_CENTS && defined
CURRENCY_HAS_INTEGER_DATATYPE
+
#if !defined CURRENCY_HAS_INTEGER_DATATYPE
# if defined __GNUC__
# pragma GCC diagnostic push
@@ -54,8 +60,13 @@ class currency
using data_type = double;
#endif // !defined CURRENCY_HAS_INTEGER_DATATYPE
+#if defined CURRENCY_UNIT_IS_CENTS
static constexpr int cents_digits = 2;
static constexpr int cents_per_dollar = 100; // 10 ^ cents_digits
+#else // !defined CURRENCY_UNIT_IS_CENTS
+ static constexpr int cents_digits = 0;
+ static constexpr int cents_per_dollar = 1; // 10 ^ cents_digits
+#endif // !defined CURRENCY_UNIT_IS_CENTS
currency() = default;
currency(currency const&) = default;
- [lmi-commits] [lmi] valyuta/002 c5e0b01 04/14: Make currency class mandatory, (continued)
- [lmi-commits] [lmi] valyuta/002 c5e0b01 04/14: Make currency class mandatory, Greg Chicares, 2020/09/17
- [lmi-commits] [lmi] valyuta/002 c80d1eb 09/14: Add two experimental options, Greg Chicares, 2020/09/17
- [lmi-commits] [lmi] valyuta/002 e4cb0f1 10/14: Make it float, Greg Chicares, 2020/09/17
- [lmi-commits] [lmi] valyuta/002 cfe336c 11/14: Make it faster, Greg Chicares, 2020/09/17
- [lmi-commits] [lmi] valyuta/002 4a6bc6c 02/14: Resolve confusion, Greg Chicares, 2020/09/17
- [lmi-commits] [lmi] valyuta/002 0d47d8d 03/14: Refine an assertion, Greg Chicares, 2020/09/17
- [lmi-commits] [lmi] valyuta/002 27c198e 05/14: fixup, Greg Chicares, 2020/09/17
- [lmi-commits] [lmi] valyuta/002 3d1ff11 06/14: Remove useless casts, Greg Chicares, 2020/09/17
- [lmi-commits] [lmi] valyuta/002 594bd68 07/14: Allow floating currency::data_type, Greg Chicares, 2020/09/17
- [lmi-commits] [lmi] valyuta/002 1fbef51 13/14: Make it even faster, Greg Chicares, 2020/09/17
- [lmi-commits] [lmi] valyuta/002 420fac7 08/14: Allow currency to be dollars rather than cents,
Greg Chicares <=
- [lmi-commits] [lmi] valyuta/002 3f71218 14/14: Trivially avoid spurious regression errors, Greg Chicares, 2020/09/17
- [lmi-commits] [lmi] valyuta/002 e262406 12/14: Make it more faster, Greg Chicares, 2020/09/17