| // RUN: %clang_builtins %s %librt -o %t && %run %t |
| // REQUIRES: librt_has_fixdfdi |
| |
| #include "int_lib.h" |
| #include <stdio.h> |
| |
| // Returns: convert a to a signed long long, rounding toward 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 di_int (no range checking performed) |
| |
| // seee eeee eeee mmmm mmmm mmmm mmmm mmmm | mmmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm |
| |
| COMPILER_RT_ABI di_int __fixdfdi(double a); |
| |
| int test__fixdfdi(double a, di_int expected) |
| { |
| di_int x = __fixdfdi(a); |
| if (x != expected) |
| printf("error in __fixdfdi(%A) = %llX, expected %llX\n", a, x, expected); |
| return x != expected; |
| } |
| |
| char assumption_1[sizeof(di_int) == 2*sizeof(si_int)] = {0}; |
| char assumption_2[sizeof(su_int)*CHAR_BIT == 32] = {0}; |
| char assumption_3[sizeof(double)*CHAR_BIT == 64] = {0}; |
| |
| int main() |
| { |
| if (test__fixdfdi(0.0, 0)) |
| return 1; |
| |
| if (test__fixdfdi(0.5, 0)) |
| return 1; |
| if (test__fixdfdi(0.99, 0)) |
| return 1; |
| if (test__fixdfdi(1.0, 1)) |
| return 1; |
| if (test__fixdfdi(1.5, 1)) |
| return 1; |
| if (test__fixdfdi(1.99, 1)) |
| return 1; |
| if (test__fixdfdi(2.0, 2)) |
| return 1; |
| if (test__fixdfdi(2.01, 2)) |
| return 1; |
| if (test__fixdfdi(-0.5, 0)) |
| return 1; |
| if (test__fixdfdi(-0.99, 0)) |
| return 1; |
| if (test__fixdfdi(-1.0, -1)) |
| return 1; |
| if (test__fixdfdi(-1.5, -1)) |
| return 1; |
| if (test__fixdfdi(-1.99, -1)) |
| return 1; |
| if (test__fixdfdi(-2.0, -2)) |
| return 1; |
| if (test__fixdfdi(-2.01, -2)) |
| return 1; |
| |
| if (test__fixdfdi(0x1.FFFFFEp+62, 0x7FFFFF8000000000LL)) |
| return 1; |
| if (test__fixdfdi(0x1.FFFFFCp+62, 0x7FFFFF0000000000LL)) |
| return 1; |
| |
| if (test__fixdfdi(-0x1.FFFFFEp+62, 0x8000008000000000LL)) |
| return 1; |
| if (test__fixdfdi(-0x1.FFFFFCp+62, 0x8000010000000000LL)) |
| return 1; |
| |
| if (test__fixdfdi(0x1.FFFFFFFFFFFFFp+62, 0x7FFFFFFFFFFFFC00LL)) |
| return 1; |
| if (test__fixdfdi(0x1.FFFFFFFFFFFFEp+62, 0x7FFFFFFFFFFFF800LL)) |
| return 1; |
| |
| if (test__fixdfdi(-0x1.FFFFFFFFFFFFFp+62, 0x8000000000000400LL)) |
| return 1; |
| if (test__fixdfdi(-0x1.FFFFFFFFFFFFEp+62, 0x8000000000000800LL)) |
| return 1; |
| |
| return 0; |
| } |
