compiler-rt/test/builtins/Unit/fixunsxfdi_test.c

   1 // RUN: %clang_builtins %s %librt -o %t && %run %t
   2 // REQUIRES: librt_has_fixunsxfdi
   3
   4 #include "int_lib.h"
   5 #include <stdio.h>
   6 #include <limits.h>
   7
   8
   9 #if HAS_80_BIT_LONG_DOUBLE
  10 // Returns: convert a to a unsigned long long, rounding toward zero.
  11 //          Negative values all become zero.
  12
  13 // Assumption: long double is an intel 80 bit floating point type padded with 6 bytes
  14 //             du_int is a 64 bit integral type
  15 //             value in long double is representable in du_int or is negative
  16 //                 (no range checking performed)
  17
  18 // gggg gggg gggg gggg gggg gggg gggg gggg | gggg gggg gggg gggg seee eeee eeee eeee |
  19 // 1mmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm | mmmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm
  20
  21 COMPILER_RT_ABI du_int __fixunsxfdi(long double a);
  22
  23 int test__fixunsxfdi(long double a, du_int expected)
  24 {
  25     du_int x = __fixunsxfdi(a);
  26     if (x != expected)
  27         printf("error in __fixunsxfdi(%LA) = %llX, expected %llX\n",
  28                a, x, expected);
  29     return x != expected;
  30 }
  31
  32 char assumption_1[sizeof(du_int) == 2*sizeof(su_int)] = {0};
  33 char assumption_2[sizeof(du_int)*CHAR_BIT == 64] = {0};
  34 char assumption_3[sizeof(long double)*CHAR_BIT == 128] = {0};
  35 #endif
  36
  37 int main()
  38 {
  39 #if HAS_80_BIT_LONG_DOUBLE
  40     if (test__fixunsxfdi(0.0, 0))
  41         return 1;
  42
  43     if (test__fixunsxfdi(0.5, 0))
  44         return 1;
  45     if (test__fixunsxfdi(0.99, 0))
  46         return 1;
  47     if (test__fixunsxfdi(1.0, 1))
  48         return 1;
  49     if (test__fixunsxfdi(1.5, 1))
  50         return 1;
  51     if (test__fixunsxfdi(1.99, 1))
  52         return 1;
  53     if (test__fixunsxfdi(2.0, 2))
  54         return 1;
  55     if (test__fixunsxfdi(2.01, 2))
  56         return 1;
  57     if (test__fixunsxfdi(-0.5, 0))
  58         return 1;
  59     if (test__fixunsxfdi(-0.99, 0))
  60         return 1;
  61     if (test__fixunsxfdi(-1.0, 0))
  62         return 1;
  63     if (test__fixunsxfdi(-1.5, 0))
  64         return 1;
  65     if (test__fixunsxfdi(-1.99, 0))
  66         return 1;
  67     if (test__fixunsxfdi(-2.0, 0))
  68         return 1;
  69     if (test__fixunsxfdi(-2.01, 0))
  70         return 1;
  71
  72     if (test__fixunsxfdi(0x1.FFFFFEp+62, 0x7FFFFF8000000000LL))
  73         return 1;
  74     if (test__fixunsxfdi(0x1.FFFFFCp+62, 0x7FFFFF0000000000LL))
  75         return 1;
  76
  77     if (test__fixunsxfdi(-0x1.FFFFFEp+62, 0))
  78         return 1;
  79     if (test__fixunsxfdi(-0x1.FFFFFCp+62, 0))
  80         return 1;
  81
  82     if (test__fixunsxfdi(0x1.FFFFFFFFFFFFFp+62, 0x7FFFFFFFFFFFFC00LL))
  83         return 1;
  84     if (test__fixunsxfdi(0x1.FFFFFFFFFFFFEp+62, 0x7FFFFFFFFFFFF800LL))
  85         return 1;
  86
  87     if (test__fixunsxfdi(-0x1.FFFFFFFFFFFFFp+62, 0))
  88         return 1;
  89     if (test__fixunsxfdi(-0x1.FFFFFFFFFFFFEp+62, 0))
  90         return 1;
  91
  92     if (test__fixunsxfdi(0x1.FFFFFFFFFFFFFFFEp+63L, 0xFFFFFFFFFFFFFFFFLL))
  93         return 1;
  94     if (test__fixunsxfdi(0x1.0000000000000002p+63L, 0x8000000000000001LL))
  95         return 1;
  96     if (test__fixunsxfdi(0x1.0000000000000000p+63L, 0x8000000000000000LL))
  97         return 1;
  98     if (test__fixunsxfdi(0x1.FFFFFFFFFFFFFFFCp+62L, 0x7FFFFFFFFFFFFFFFLL))
  99         return 1;
 100     if (test__fixunsxfdi(0x1.FFFFFFFFFFFFFFF8p+62L, 0x7FFFFFFFFFFFFFFELL))
 101         return 1;
 102
 103     if (test__fixunsxfdi(-0x1.0000000000000000p+63L, 0))
 104         return 1;
 105     if (test__fixunsxfdi(-0x1.FFFFFFFFFFFFFFFCp+62L, 0))
 106         return 1;
 107     if (test__fixunsxfdi(-0x1.FFFFFFFFFFFFFFF8p+62L, 0))
 108         return 1;
 109
 110 #else
 111     printf("skipped\n");
 112 #endif
 113    return 0;
 114 }