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cppdraft/complex/literals.md

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+[complex.literals]
+
+# 29 Numerics library [[numerics]](./#numerics)
+
+## 29.4 Complex numbers [[complex.numbers]](complex.numbers#complex.literals)
+
+### 29.4.11 Suffixes for complex number literals [complex.literals]
+
+[1](#1)
+
+[#](http://github.com/Eelis/draft/tree/9adde4bc1c62ec234483e63ea3b70a59724c745a/source/numerics.tex#L1212)
+
+This subclause describes literal suffixes for constructing complex number literals[.](#1.sentence-1)
+
+The suffixes i, il, and if create complex numbers of
+the types complex<double>, complex<long double>, andcomplex<float> respectively, with their imaginary part denoted by the
+given literal number and the real part being zero[.](#1.sentence-2)
+
+[🔗](#lib:operator%22%22il,complex)
+
+`constexpr complex<long double> operator""il(long double d);
+constexpr complex<long double> operator""il(unsigned long long d);
+`
+
+[2](#2)
+
+[#](http://github.com/Eelis/draft/tree/9adde4bc1c62ec234483e63ea3b70a59724c745a/source/numerics.tex#L1226)
+
+*Returns*: complex<long double>{0.0L, static_cast<long double>(d)}[.](#2.sentence-1)
+
+[🔗](#lib:operator%22%22i,complex)
+
+`constexpr complex<double> operator""i(long double d);
+constexpr complex<double> operator""i(unsigned long long d);
+`
+
+[3](#3)
+
+[#](http://github.com/Eelis/draft/tree/9adde4bc1c62ec234483e63ea3b70a59724c745a/source/numerics.tex#L1238)
+
+*Returns*: complex<double>{0.0, static_cast<double>(d)}[.](#3.sentence-1)
+
+[🔗](#lib:operator%22%22if,complex)
+
+`constexpr complex<float> operator""if(long double d);
+constexpr complex<float> operator""if(unsigned long long d);
+`
+
+[4](#4)
+
+[#](http://github.com/Eelis/draft/tree/9adde4bc1c62ec234483e63ea3b70a59724c745a/source/numerics.tex#L1250)
+
+*Returns*: complex<float>{0.0f, static_cast<float>(d)}[.](#4.sentence-1)