21 Metaprogramming library [meta]

21.5 Compile-time rational arithmetic [ratio]

21.5.4 Arithmetic on ratios [ratio.arithmetic]

Table 65 — Expressions used to perform ratio arithmetic [tab:ratio.arithmetic]

🔗 Type	Value of X	Value of Y
🔗 ratio_add<R1, R2>	R1::num * R2::den +	R1::den * R2::den
🔗	R2::num * R1::den
🔗 ratio_subtract<R1, R2>	R1::num * R2::den -	R1::den * R2::den
🔗	R2::num * R1::den
🔗 ratio_multiply<R1, R2>	R1::num * R2::num	R1::den * R2::den
🔗 ratio_divide<R1, R2>	R1::num * R2::den	R1::den * R2::num