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

   1 //===-- floatditf_test.c - Test __floatditf -------------------------------===//
   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 __floatditf for the compiler_rt library.
  11 //
  12 //===----------------------------------------------------------------------===//
  13
  14 #include "int_lib.h"
  15 #include <math.h>
  16 #include <complex.h>
  17 #include <stdio.h>
  18
  19 #if __LDBL_MANT_DIG__ == 113
  20
  21 #include "fp_test.h"
  22
  23 // Returns: long integer converted to long double
  24
  25 COMPILER_RT_ABI long double __floatditf(long long a);
  26
  27 int test__floatditf(long long a, uint64_t expectedHi, uint64_t expectedLo)
  28 {
  29     long double x = __floatditf(a);
  30     int ret = compareResultLD(x, expectedHi, expectedLo);
  31
  32     if (ret)
  33         printf("error in __floatditf(%Ld) = %.20Lf, "
  34                "expected %.20Lf\n", a, x, fromRep128(expectedHi, expectedLo));
  35     return ret;
  36 }
  37
  38 char assumption_1[sizeof(long double) * CHAR_BIT == 128] = {0};
  39
  40 #endif
  41
  42 int main()
  43 {
  44 #if __LDBL_MANT_DIG__ == 113
  45     if (test__floatditf(0x7fffffffffffffff, UINT64_C(0x403dffffffffffff), UINT64_C(0xfffc000000000000)))
  46         return 1;
  47     if (test__floatditf(0x123456789abcdef1, UINT64_C(0x403b23456789abcd), UINT64_C(0xef10000000000000)))
  48         return 1;
  49     if (test__floatditf(0x2, UINT64_C(0x4000000000000000), UINT64_C(0x0)))
  50         return 1;
  51     if (test__floatditf(0x1, UINT64_C(0x3fff000000000000), UINT64_C(0x0)))
  52         return 1;
  53     if (test__floatditf(0x0, UINT64_C(0x0), UINT64_C(0x0)))
  54         return 1;
  55     if (test__floatditf(0xffffffffffffffff, UINT64_C(0xbfff000000000000), UINT64_C(0x0)))
  56         return 1;
  57     if (test__floatditf(0xfffffffffffffffe, UINT64_C(0xc000000000000000), UINT64_C(0x0)))
  58         return 1;
  59     if (test__floatditf(-0x123456789abcdef1, UINT64_C(0xc03b23456789abcd), UINT64_C(0xef10000000000000)))
  60         return 1;
  61     if (test__floatditf(0x8000000000000000, UINT64_C(0xc03e000000000000), UINT64_C(0x0)))
  62         return 1;
  63
  64 #else
  65     printf("skipped\n");
  66
  67 #endif
  68     return 0;
  69 }