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

   1 // RUN: %clang_builtins %s %librt -o %t && %run %t
   2 // REQUIRES: librt_has_floatunsitf
   3
   4 #include "int_lib.h"
   5 #include <stdio.h>
   6
   7 // The testcase currently assumes IEEE TF format, once that has been
   8 // fixed the defined(CRT_HAS_IEEE_TF) guard can be removed to enable it for
   9 // IBM 128 floats as well.
  10 #if defined(CRT_HAS_IEEE_TF)
  11
  12 #  include "fp_test.h"
  13
  14 COMPILER_RT_ABI tf_float __floatunsitf(su_int a);
  15
  16 int test__floatunsitf(su_int a, uint64_t expectedHi, uint64_t expectedLo) {
  17   tf_float x = __floatunsitf(a);
  18   int ret = compareResultF128(x, expectedHi, expectedLo);
  19
  20   if (ret) {
  21     printf("error in test__floatunsitf(%u) = %.20Lf, "
  22            "expected %.20Lf\n",
  23            a, x, fromRep128(expectedHi, expectedLo));
  24   }
  25   return ret;
  26 }
  27
  28 char assumption_1[sizeof(tf_float) * CHAR_BIT == 128] = {0};
  29
  30 #endif
  31
  32 int main() {
  33 #if defined(CRT_HAS_IEEE_TF)
  34   if (test__floatunsitf(0x7fffffff, UINT64_C(0x401dfffffffc0000),
  35                         UINT64_C(0x0)))
  36     return 1;
  37   if (test__floatunsitf(0, UINT64_C(0x0), UINT64_C(0x0)))
  38     return 1;
  39   if (test__floatunsitf(0xffffffff, UINT64_C(0x401efffffffe0000),
  40                         UINT64_C(0x0)))
  41     return 1;
  42   if (test__floatunsitf(0x12345678, UINT64_C(0x401b234567800000),
  43                         UINT64_C(0x0)))
  44     return 1;
  45
  46 #else
  47   printf("skipped\n");
  48
  49 #endif
  50   return 0;
  51 }