| /* 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 |
