Provided by: libstdc++-9-doc_9.2.1-9ubuntu2_all

**NAME**

std::ratio< _Num, _Den > - Provides compile-time rational arithmetic.

**SYNOPSIS**

PublicTypestypedefratio< num, den >typeStaticPublicAttributesstatic constexpr intmax_tdenstatic constexpr intmax_tnum

**Detailed** **Description**

template<intmax_t_Num,intmax_t_Den=1>struct std::ratio< _Num, _Den >" Provides compile-time rational arithmetic. This class template represents any finite rational number with a numerator and denominator representable by compile-time constants of type intmax_t. The ratio is simplified when instantiated. For example: std::ratio<7,-21>::num == -1; std::ratio<7,-21>::den == 3; Definition at line 261 of file ratio.

**Author**

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