| // RUN: %clang_builtins %s %librt -o %t && %run %t |
| // REQUIRES: librt_has_fixunsdfsi |
| |
| #include "int_lib.h" |
| #include <stdio.h> |
| |
| // Returns: convert a to a unsigned int, rounding toward zero. |
| // Negative values all become zero. |
| |
| // Assumption: double is a IEEE 64 bit floating point type |
| // su_int is a 32 bit integral type |
| // value in double is representable in su_int or is negative |
| // (no range checking performed) |
| |
| // seee eeee eeee mmmm mmmm mmmm mmmm mmmm | mmmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm |
| |
| COMPILER_RT_ABI su_int __fixunsdfsi(double a); |
| |
| int test__fixunsdfsi(double a, su_int expected) |
| { |
| su_int x = __fixunsdfsi(a); |
| if (x != expected) |
| printf("error in __fixunsdfsi(%A) = %X, expected %X\n", a, x, expected); |
| return x != expected; |
| } |
| |
| char assumption_2[sizeof(su_int)*CHAR_BIT == 32] = {0}; |
| char assumption_3[sizeof(double)*CHAR_BIT == 64] = {0}; |
| |
| int main() |
| { |
| if (test__fixunsdfsi(0.0, 0)) |
| return 1; |
| |
| if (test__fixunsdfsi(0.5, 0)) |
| return 1; |
| if (test__fixunsdfsi(0.99, 0)) |
| return 1; |
| if (test__fixunsdfsi(1.0, 1)) |
| return 1; |
| if (test__fixunsdfsi(1.5, 1)) |
| return 1; |
| if (test__fixunsdfsi(1.99, 1)) |
| return 1; |
| if (test__fixunsdfsi(2.0, 2)) |
| return 1; |
| if (test__fixunsdfsi(2.01, 2)) |
| return 1; |
| if (test__fixunsdfsi(-0.5, 0)) |
| return 1; |
| if (test__fixunsdfsi(-0.99, 0)) |
| return 1; |
| #if !TARGET_LIBGCC |
| if (test__fixunsdfsi(-1.0, 0)) // libgcc ignores "returns 0 for negative input" spec |
| return 1; |
| if (test__fixunsdfsi(-1.5, 0)) |
| return 1; |
| if (test__fixunsdfsi(-1.99, 0)) |
| return 1; |
| if (test__fixunsdfsi(-2.0, 0)) |
| return 1; |
| if (test__fixunsdfsi(-2.01, 0)) |
| return 1; |
| #endif |
| |
| if (test__fixunsdfsi(0x1.000000p+31, 0x80000000)) |
| return 1; |
| if (test__fixunsdfsi(0x1.000000p+32, 0xFFFFFFFF)) |
| return 1; |
| if (test__fixunsdfsi(0x1.FFFFFEp+31, 0xFFFFFF00)) |
| return 1; |
| if (test__fixunsdfsi(0x1.FFFFFEp+30, 0x7FFFFF80)) |
| return 1; |
| if (test__fixunsdfsi(0x1.FFFFFCp+30, 0x7FFFFF00)) |
| return 1; |
| |
| #if !TARGET_LIBGCC |
| if (test__fixunsdfsi(-0x1.FFFFFEp+30, 0)) |
| return 1; |
| if (test__fixunsdfsi(-0x1.FFFFFCp+30, 0)) |
| return 1; |
| #endif |
| |
| if (test__fixunsdfsi(0x1.FFFFFFFEp+31, 0xFFFFFFFF)) |
| return 1; |
| if (test__fixunsdfsi(0x1.FFFFFFFC00000p+30, 0x7FFFFFFF)) |
| return 1; |
| if (test__fixunsdfsi(0x1.FFFFFFF800000p+30, 0x7FFFFFFE)) |
| return 1; |
| |
| return 0; |
| } |
