src/compiler-rt/test/builtins/Unit/fixsfti_test.c

   1 //===-- fixsfti_test.c - Test __fixsfti -----------------------------------===//
   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 __fixsfti for the compiler_rt library.
  11 //
  12 //===----------------------------------------------------------------------===//
  13
  14 #include "int_lib.h"
  15 #include <stdio.h>
  16
  17 #ifdef CRT_HAS_128BIT
  18
  19 // Returns: convert a to a signed long long, rounding toward zero.
  20
  21 // Assumption: float is a IEEE 32 bit floating point type
  22 //             su_int is a 32 bit integral type
  23 //             value in float is representable in ti_int (no range checking performed)
  24
  25 // seee eeee emmm mmmm mmmm mmmm mmmm mmmm
  26
  27 COMPILER_RT_ABI ti_int __fixsfti(float a);
  28
  29 int test__fixsfti(float a, ti_int expected)
  30 {
  31     ti_int x = __fixsfti(a);
  32     if (x != expected)
  33     {
  34         twords xt;
  35         xt.all = x;
  36         twords expectedt;
  37         expectedt.all = expected;
  38         printf("error in __fixsfti(%A) = 0x%.16llX%.16llX, expected 0x%.16llX%.16llX\n",
  39         a, xt.s.high, xt.s.low, expectedt.s.high, expectedt.s.low);
  40     }
  41     return x != expected;
  42 }
  43
  44 char assumption_1[sizeof(ti_int) == 2*sizeof(di_int)] = {0};
  45 char assumption_2[sizeof(su_int)*CHAR_BIT == 32] = {0};
  46 char assumption_3[sizeof(float)*CHAR_BIT == 32] = {0};
  47
  48 #endif
  49
  50 int main()
  51 {
  52 #ifdef CRT_HAS_128BIT
  53     if (test__fixsfti(0.0F, 0))
  54         return 1;
  55
  56     if (test__fixsfti(0.5F, 0))
  57         return 1;
  58     if (test__fixsfti(0.99F, 0))
  59         return 1;
  60     if (test__fixsfti(1.0F, 1))
  61         return 1;
  62     if (test__fixsfti(1.5F, 1))
  63         return 1;
  64     if (test__fixsfti(1.99F, 1))
  65         return 1;
  66     if (test__fixsfti(2.0F, 2))
  67         return 1;
  68     if (test__fixsfti(2.01F, 2))
  69         return 1;
  70     if (test__fixsfti(-0.5F, 0))
  71         return 1;
  72     if (test__fixsfti(-0.99F, 0))
  73         return 1;
  74     if (test__fixsfti(-1.0F, -1))
  75         return 1;
  76     if (test__fixsfti(-1.5F, -1))
  77         return 1;
  78     if (test__fixsfti(-1.99F, -1))
  79         return 1;
  80     if (test__fixsfti(-2.0F, -2))
  81         return 1;
  82     if (test__fixsfti(-2.01F, -2))
  83         return 1;
  84
  85     if (test__fixsfti(0x1.FFFFFEp+62F, 0x7FFFFF8000000000LL))
  86         return 1;
  87     if (test__fixsfti(0x1.FFFFFCp+62F, 0x7FFFFF0000000000LL))
  88         return 1;
  89
  90     if (test__fixsfti(-0x1.FFFFFEp+62F, make_ti(0xFFFFFFFFFFFFFFFFLL,
  91                                                 0x8000008000000000LL)))
  92         return 1;
  93     if (test__fixsfti(-0x1.FFFFFCp+62F, make_ti(0xFFFFFFFFFFFFFFFFLL,
  94                                                 0x8000010000000000LL)))
  95         return 1;
  96
  97     if (test__fixsfti(0x1.FFFFFEp+126F, make_ti(0x7FFFFF8000000000LL, 0)))
  98         return 1;
  99     if (test__fixsfti(0x1.FFFFFCp+126F, make_ti(0x7FFFFF0000000000LL, 0)))
 100         return 1;
 101
 102     if (test__fixsfti(-0x1.FFFFFEp+126F, make_ti(0x8000008000000000LL, 0)))
 103         return 1;
 104     if (test__fixsfti(-0x1.FFFFFCp+126F, make_ti(0x8000010000000000LL, 0)))
 105         return 1;
 106
 107 #else
 108     printf("skipped\n");
 109 #endif
 110    return 0;
 111 }