c9ce332b55
For 32-bit targets without __int128 we need to implement the LCG transition function by hand using 64-bit types. We can also slightly simplify the __mod function by using if-constexpr unconditionally, disabling -Wc++17-extensions warnings with diagnostic pragmas. libstdc++-v3/ChangeLog: PR libstdc++/87744 * include/bits/random.h [!__SIZEOF_INT128__] (_Select_uint_least_t): Define specialization for 64-bit generators with non-power-of-two modulus and large constants. (__mod): Use if constexpr unconditionally. * testsuite/26_numerics/random/pr60037-neg.cc: Adjust dg-error line number. * testsuite/26_numerics/random/linear_congruential_engine/87744.cc: New test. |
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