sys/external/bsd/compiler_rt/dist/test/Unit/fixsfdi_test.c

   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 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 }