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add SI prefixes

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This commit is contained in:
alison wright 2019-11-09 15:30:06 -05:00
parent 83ba1bae08
commit 9c094fb094
1 changed files with 36 additions and 0 deletions
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36
source/common.h
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@ -23,6 +23,9 @@
using namespace std::string_literals;
using LitInt = unsigned long long int;
using LitFlt = long double;
inline constexpr std::nullopt_t None{std::nullopt};
template<typename T>
@ -72,6 +75,39 @@ struct IMemoryStream : public virtual MemoryStreamBuf, public std::istream {
}
};
#define siPrefixDivT(T, name, value) \
constexpr T operator "" name(T n) {return n / T(value);}
#define siPrefixMulT(T, name, value) \
constexpr T operator "" name(T n) {return n * T(value);}
#define siPrefixDiv(name, value) \
siPrefixDivT(LitInt, name, value) \
siPrefixDivT(LitFlt, name, value)
#define siPrefixMul(name, value) \
siPrefixMulT(LitInt, name, value) \
siPrefixMulT(LitFlt, name, value)
#define siPrefixDivMul(divName, mulName, value) \
siPrefixDiv(divName, value) \
siPrefixMul(mulName, value)
siPrefixDivMul(_d, _da, 10)
siPrefixDivMul(_c, _h, 100)
siPrefixDivMul(_m, _k, 1'000)
siPrefixDivMul(_mc, _M, 1'000'000)
siPrefixDivMul(_n, _G, 1'000'000'000)
siPrefixDivMul(_p, _T, 1'000'000'000'000)
siPrefixDivMul(_f, _P, 1'000'000'000'000'000)
siPrefixDivMul(_a, _E, 1'000'000'000'000'000'000)
siPrefixMul(_Ki, 1'024)
siPrefixMul(_Mi, 1'048'576)
siPrefixMul(_Gi, 1'073'741'824)
siPrefixMul(_Ti, 1'099'511'627'776)
siPrefixMul(_Pi, 1'125'899'906'842'624)
siPrefixMul(_Ei, 1'152'921'504'606'846'976)
static inline QString trMain(char const *sourceText,
char const *disambiguation = nullptr,
int n = -1) {