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#pragma once
#include <cstdint>
#include <concepts>
namespace Pinetime {
namespace Utility {
// returns the arcsin of `arg`. asin(-32767) = -90, asin(32767) = 90
int16_t Asin(int16_t arg);
// Round half away from zero integer division
// If T signed, divisor cannot be std::numeric_limits<T>::min()
// Adapted from https://github.com/lucianpls/rounding_integer_division
// Under the MIT license
template <std::integral T>
constexpr T RoundedDiv(T dividend, T divisor) {
bool neg = divisor < 0;
if (neg) {
// overflows if divisor is minimum value for T
divisor = -divisor;
}
T m = dividend % divisor;
T h = divisor / 2 + divisor % 2;
T res = (dividend / divisor) + (!(dividend < 0) & (m >= h)) - ((dividend < 0) & ((m + h) <= 0));
if (neg) {
res = -res;
}
return res;
}
}
}
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