/* Test that the preprocessor is capable of 64-bit arithmetic. (Must turn off -pedantic, since `LL' constants are only in C99.) */ /* { dg-do preprocess } */ /* { dg-options "" } */ #define U_MAX 4294967295U #define ULL_MAX 18446744073709551615ULL #define LL_MAX 9223372036854775807LL #define LL_MIN (-LL_MAX-1) /* Check simple truncation. */ #if U_MAX == ULL_MAX || LL_MIN == 0 || LL_MAX == -1 #error "simple truncation" /* { dg-bogus "trunc" "simple truncation" } */ #endif /* Check left/right shifting with all bits set and with one bit set. */ #if !(~0ULL >> 63) || !(~0ULL << 63) || !(~0LL >> 63) || !(~0LL << 63) || \ !(LL_MIN >> 63) || !(1LL << 62) || !(ULL_MAX >> 63) || !(1ULL << 63) #error "bit shift truncation" /* { dg-bogus "trunc" "bit shift truncation" } */ #endif /* Check math expressions. */ #if (2ULL * U_MAX < U_MAX) || (1ULL + U_MAX < U_MAX) #error "math truncation" /* { dg-bogus "trunc" "math truncation" } */ #endif