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git subrepo clone git@github.com:Rconybea/xo-unit.git xo-unit

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subrepo:
  subdir:   "xo-unit"
  merged:   "f1e698bf"
upstream:
  origin:   "git@github.com:Rconybea/xo-unit.git"
  branch:   "main"
  commit:   "f1e698bf"
git-subrepo:
  version:  "0.4.9"
  origin:   "???"
  commit:   "???"
This commit is contained in:
Roland Conybeare 2026-06-06 22:22:52 -04:00
commit 60f796b770
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36
xo-unit/example/ex6/ex6.cpp Normal file
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/** @file ex6.cpp **/
#include "xo/unit/quantity.hpp"
#include "xo/unit/quantity_iostream.hpp"
#include <iostream>
int
main () {
using xo::qty::quantity;
namespace q = xo::qty::qty;
using xo::flatstring;
/* 20% volatility over 360 days */
auto q1 = q::volatility_360d(0.2);
/* 10% volatility over 30 days */
auto q2 = q::volatility_30d(0.1);
/* 10% volatility per 30 days
* ~ (10% * sqrt(360/30)) volatility over 360 days
* ~ (10% * 3.4641)
* ~ 0.34641yr360^(-1/2)
*/
auto sum = q1 + q2;
auto prod = q1 * q2;
static_assert(sum.abbrev() == flatstring("yr360^(-1/2)"));
static_assert(prod.abbrev() == flatstring("yr360^-1"));
std::cerr << "q1: " << q1 << std::endl;
std::cerr << "q2: " << q2 << std::endl;
std::cerr << "q1+q2: " << sum << std::endl;
std::cerr << "q1*q2: " << prod << std::endl;
}
/** end ex6.cpp */