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Add new prefixes #65

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143cdfc
Update prefixes.hpp
ivanpanch Jul 27, 2025
7be5936
Update scale.hpp
ivanpanch Jul 27, 2025
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6 changes: 6 additions & 0 deletions include/boost/units/scale.hpp
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Original file line number Diff line number Diff line change
Expand Up @@ -94,6 +94,8 @@ struct scale<base_, exponent_ > \
#define BOOST_UNITS_SCALE_DEF(exponent_,value_,name_,symbol_) \
BOOST_UNITS_SCALE_SPECIALIZATION(10,static_rational<exponent_>,value_, name_, symbol_)

BOOST_UNITS_SCALE_DEF(-30, 1e-30, quecto, q);
BOOST_UNITS_SCALE_DEF(-27, 1e-27, ronto, r);
BOOST_UNITS_SCALE_DEF(-24, 1e-24, yocto, y);
BOOST_UNITS_SCALE_DEF(-21, 1e-21, zepto, z);
BOOST_UNITS_SCALE_DEF(-18, 1e-18, atto, a);
Expand All @@ -115,6 +117,8 @@ BOOST_UNITS_SCALE_DEF(15, 1e15, peta, P);
BOOST_UNITS_SCALE_DEF(18, 1e18, exa, E);
BOOST_UNITS_SCALE_DEF(21, 1e21, zetta, Z);
BOOST_UNITS_SCALE_DEF(24, 1e24, yotta, Y);
BOOST_UNITS_SCALE_DEF(27, 1e27, ronna, R);
BOOST_UNITS_SCALE_DEF(30, 1e30, quetta, Q);

BOOST_UNITS_SCALE_SPECIALIZATION(2, static_rational<10>, 1024.0, kibi, Ki);
BOOST_UNITS_SCALE_SPECIALIZATION(2, static_rational<20>, 1048576.0, mebi, Mi);
Expand All @@ -124,6 +128,8 @@ BOOST_UNITS_SCALE_SPECIALIZATION(2, static_rational<50>, 1125899906842624.0, peb
BOOST_UNITS_SCALE_SPECIALIZATION(2, static_rational<60>, 1152921504606846976.0, exbi, Ei);
BOOST_UNITS_SCALE_SPECIALIZATION(2, static_rational<70>, 1180591620717411303424.0, zebi, Zi);
BOOST_UNITS_SCALE_SPECIALIZATION(2, static_rational<80>, 1208925819614629174706176.0, yobi, Yi);
BOOST_UNITS_SCALE_SPECIALIZATION(2, static_rational<90>, 1237940039285380274899124224.0, robi, Ri);
BOOST_UNITS_SCALE_SPECIALIZATION(2, static_rational<100>, 1267650600228229401496703205376.0, quebi, Qi);

#undef BOOST_UNITS_SCALE_DEF
#undef BOOST_UNITS_SCALE_SPECIALIZATION
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12 changes: 10 additions & 2 deletions include/boost/units/systems/si/prefixes.hpp
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Original file line number Diff line number Diff line change
Expand Up @@ -26,6 +26,8 @@ namespace si {
typedef make_scaled_unit<dimensionless, scale<10, static_rational<exponent> > >::type name ## _type;\
BOOST_UNITS_STATIC_CONSTANT(name, name ## _type)

BOOST_UNITS_METRIC_PREFIX(-30, quecto);
BOOST_UNITS_METRIC_PREFIX(-27, ronto);
BOOST_UNITS_METRIC_PREFIX(-24, yocto);
BOOST_UNITS_METRIC_PREFIX(-21, zepto);
BOOST_UNITS_METRIC_PREFIX(-18, atto);
Expand All @@ -46,8 +48,12 @@ BOOST_UNITS_METRIC_PREFIX(15, peta);
BOOST_UNITS_METRIC_PREFIX(18, exa);
BOOST_UNITS_METRIC_PREFIX(21, zetta);
BOOST_UNITS_METRIC_PREFIX(24, yotta);
BOOST_UNITS_METRIC_PREFIX(27, ronna);
BOOST_UNITS_METRIC_PREFIX(30, quetta);

/*BOOST_UNITS_STATIC_CONSTANT(yocto,long double) = (1e-24); ///< metric prefix for 1.0e-24
/*BOOST_UNITS_STATIC_CONSTANT(quecto,long double) = (1e-30); ///< metric prefix for 1.0e-30
BOOST_UNITS_STATIC_CONSTANT(ronto,long double) = (1e-27); ///< metric prefix for 1.0e-27
BOOST_UNITS_STATIC_CONSTANT(yocto,long double) = (1e-24); ///< metric prefix for 1.0e-24
BOOST_UNITS_STATIC_CONSTANT(zepto,long double) = (1e-21); ///< metric prefix for 1.0e-21
BOOST_UNITS_STATIC_CONSTANT(atto,long double) = (1e-18); ///< metric prefix for 1.0e-18
BOOST_UNITS_STATIC_CONSTANT(femto,long double) = (1e-15); ///< metric prefix for 1.0e-15
Expand All @@ -66,7 +72,9 @@ BOOST_UNITS_STATIC_CONSTANT(tera,long double) = (1e12); ///< metric pref
BOOST_UNITS_STATIC_CONSTANT(peta,long double) = (1e15); ///< metric prefix for 1.0e+15
BOOST_UNITS_STATIC_CONSTANT(exa,long double) = (1e18); ///< metric prefix for 1.0e+18
BOOST_UNITS_STATIC_CONSTANT(zetta,long double) = (1e21); ///< metric prefix for 1.0e+21
BOOST_UNITS_STATIC_CONSTANT(yotta,long double) = (1e24); ///< metric prefix for 1.0e+24 */
BOOST_UNITS_STATIC_CONSTANT(yotta,long double) = (1e24); ///< metric prefix for 1.0e+24
BOOST_UNITS_STATIC_CONSTANT(ronna,long double) = (1e27); ///< metric prefix for 1.0e+27
BOOST_UNITS_STATIC_CONSTANT(quetta,long double) = (1e30); ///< metric prefix for 1.0e+30*/

} // namespace si

Expand Down