xo-unit: example: + ex4 .. ex6

example/CMakeLists.txt

@@ -1,3 +1,6 @@
 add_subdirectory(ex1)
 add_subdirectory(ex2)
 add_subdirectory(ex3)
+add_subdirectory(ex4)
+add_subdirectory(ex5)
+add_subdirectory(ex6)

example/ex4/CMakeLists.txt

@@ -0,0 +1,15 @@
+# xo-unit/example/ex4/CMakeLists.txt
+
+set(SELF_EXE xo_unit_ex4)
+set(SELF_SRCS ex4.cpp)
+
+add_executable(${SELF_EXE} ${SELF_SRCS})
+xo_include_options2(${SELF_EXE})
+
+# ----------------------------------------------------------------
+# dependencies..
+
+xo_self_dependency(${SELF_EXE} xo_unit)
+xo_dependency(${SELF_EXE} reflect)
+
+# end CMakeLists.txt

example/ex4/ex4.cpp

@@ -0,0 +1,26 @@
+/** @file ex4.cpp **/
+
+#include "xo/unit/quantity.hpp"
+#include <iostream>
+
+int
+main () {
+    namespace u = xo::unit::units;
+    namespace qty = xo::unit::qty;
+    using namespace std;
+
+    /* 20% volatility over 250 days (approx number of trading days in one year) */
+    auto t1 = qty::milliseconds(1);
+    /* 10% volatility over 30 days */
+    auto t2 = qty::minutes(1);
+
+    auto r1 = t1 / t2.with_repr<double>();
+    auto r2 = t2 / t1.with_repr<double>();
+
+    static_assert(same_as<decltype(r1), double>);
+    static_assert(same_as<decltype(r2), double>);
+
+    cerr << "t1: " << t1 << ", t2: " << t2 << ", t1/t2: " << r1 << ", t2/t1: " << r2 << endl;
+}
+
+/** end ex4.cpp */

example/ex5/CMakeLists.txt

@@ -0,0 +1,15 @@
+# xo-unit/example/ex5/CMakeLists.txt
+
+set(SELF_EXE xo_unit_ex5)
+set(SELF_SRCS ex5.cpp)
+
+add_executable(${SELF_EXE} ${SELF_SRCS})
+xo_include_options2(${SELF_EXE})
+
+# ----------------------------------------------------------------
+# dependencies..
+
+xo_self_dependency(${SELF_EXE} xo_unit)
+xo_dependency(${SELF_EXE} reflect)
+
+# end CMakeLists.txt

example/ex5/ex5.cpp

@@ -0,0 +1,23 @@
+/** @file ex5.cpp **/
+
+#include "xo/unit/quantity.hpp"
+#include <iostream>
+
+int
+main () {
+    namespace u = xo::unit::units;
+    namespace qty = xo::unit::qty;
+    using namespace std;
+
+    /* 20% volatility over 250 days (approx number of trading days in one year) */
+    auto q1 = qty::volatility250d(0.2);
+    /* 10% volatility over 30 days */
+    auto q2 = qty::volatility30d(0.1);
+
+    auto sum = q1 + q2;
+    auto prod = q1 * q2;
+
+    cerr << "q1: " << q1 << ", q2: " << q2 << ", q1+q2: " << sum << ", q1*q2: " << prod << endl;
+}
+
+/** end ex5.cpp */

example/ex6/CMakeLists.txt

@@ -0,0 +1,15 @@
+# xo-unit/example/ex6/CMakeLists.txt
+
+set(SELF_EXE xo_unit_ex6)
+set(SELF_SRCS ex6.cpp)
+
+add_executable(${SELF_EXE} ${SELF_SRCS})
+xo_include_options2(${SELF_EXE})
+
+# ----------------------------------------------------------------
+# dependencies..
+
+xo_self_dependency(${SELF_EXE} xo_unit)
+xo_dependency(${SELF_EXE} reflect)
+
+# end CMakeLists.txt

example/ex6/ex6.cpp

@@ -0,0 +1,19 @@
+/** @file ex6.cpp **/
+
+#include "xo/unit/quantity.hpp"
+#include <iostream>
+
+int
+main () {
+    namespace u = xo::unit::units;
+    namespace qty = xo::unit::qty;
+    using namespace std;
+
+    auto t1 = qty::milliseconds(25.0);
+    auto t1_usec = t1.with_unit<u::microsecond>();
+    auto t1_sec = t1.with_unit<u::second>();
+
+    cerr << "t1: " << t1 << ", t1_usec: " << t1_usec << ", t1_sec: " << t1_sec << endl;
+}
+
+/** end ex6.cpp */