Home | History | Annotate | Download | only in Unit 
      1 //===-- fixsfdi_test.c - Test __fixsfdi -----------------------------------===//
      2 //
      3 //                     The LLVM Compiler Infrastructure
      4 //
      5 // This file is dual licensed under the MIT and the University of Illinois Open
      6 // Source Licenses. See LICENSE.TXT for details.
      7 //
      8 //===----------------------------------------------------------------------===//
      9 //
     10 // This file tests __fixsfdi for the compiler_rt library.
     11 //
     12 //===----------------------------------------------------------------------===//
     13 
     14 #include "int_lib.h"
     15 #include <stdio.h>
     16 
     17 // Returns: convert a to a signed long long, rounding toward zero.
     18 
     19 // Assumption: float is a IEEE 32 bit floating point type
     20 //             su_int is a 32 bit integral type
     21 //             value in float is representable in di_int (no range checking performed)
     22 
     23 // seee eeee emmm mmmm mmmm mmmm mmmm mmmm
     24 
     25 COMPILER_RT_ABI di_int __fixsfdi(float a);
     26 
     27 int test__fixsfdi(float a, di_int expected)
     28 {
     29     di_int x = __fixsfdi(a);
     30     if (x != expected)
     31         printf("error in __fixsfdi(%A) = %llX, expected %llX\n", a, x, expected);
     32     return x != expected;
     33 }
     34 
     35 char assumption_1[sizeof(di_int) == 2*sizeof(si_int)] = {0};
     36 char assumption_2[sizeof(su_int)*CHAR_BIT == 32] = {0};
     37 char assumption_3[sizeof(float)*CHAR_BIT == 32] = {0};
     38 
     39 int main()
     40 {
     41     if (test__fixsfdi(0.0F, 0))
     42         return 1;
     43 
     44     if (test__fixsfdi(0.5F, 0))
     45         return 1;
     46     if (test__fixsfdi(0.99F, 0))
     47         return 1;
     48     if (test__fixsfdi(1.0F, 1))
     49         return 1;
     50     if (test__fixsfdi(1.5F, 1))
     51         return 1;
     52     if (test__fixsfdi(1.99F, 1))
     53         return 1;
     54     if (test__fixsfdi(2.0F, 2))
     55         return 1;
     56     if (test__fixsfdi(2.01F, 2))
     57         return 1;
     58     if (test__fixsfdi(-0.5F, 0))
     59         return 1;
     60     if (test__fixsfdi(-0.99F, 0))
     61         return 1;
     62     if (test__fixsfdi(-1.0F, -1))
     63         return 1;
     64     if (test__fixsfdi(-1.5F, -1))
     65         return 1;
     66     if (test__fixsfdi(-1.99F, -1))
     67         return 1;
     68     if (test__fixsfdi(-2.0F, -2))
     69         return 1;
     70     if (test__fixsfdi(-2.01F, -2))
     71         return 1;
     72 
     73     if (test__fixsfdi(0x1.FFFFFEp+62F, 0x7FFFFF8000000000LL))
     74         return 1;
     75     if (test__fixsfdi(0x1.FFFFFCp+62F, 0x7FFFFF0000000000LL))
     76         return 1;
     77 
     78     if (test__fixsfdi(-0x1.FFFFFEp+62F, 0x8000008000000000LL))
     79         return 1;
     80     if (test__fixsfdi(-0x1.FFFFFCp+62F, 0x8000010000000000LL))
     81         return 1;
     82 
     83    return 0;
     84 }
     85