Home | History | Annotate | Download | only in Unit
      1 //===-- floattisf_test.c - Test __floattisf -------------------------------===//
      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 __floattisf for the compiler_rt library.
     11 //
     12 //===----------------------------------------------------------------------===//
     13 
     14 #if __x86_64
     15 
     16 #include "int_lib.h"
     17 #include <float.h>
     18 #include <stdio.h>
     19 
     20 // Returns: convert a to a float, rounding toward even.
     21 
     22 // Assumption: float is a IEEE 32 bit floating point type
     23 //             ti_int is a 64 bit integral type
     24 
     25 // seee eeee emmm mmmm mmmm mmmm mmmm mmmm
     26 
     27 float __floattisf(ti_int a);
     28 
     29 int test__floattisf(ti_int a, float expected)
     30 {
     31     float x = __floattisf(a);
     32     if (x != expected)
     33     {
     34         twords at;
     35         at.all = a;
     36         printf("error in __floattisf(0x%.16llX%.16llX) = %a, expected %a\n",
     37                at.s.high, at.s.low, x, expected);
     38     }
     39     return x != expected;
     40 }
     41 
     42 char assumption_1[sizeof(ti_int) == 2*sizeof(di_int)] = {0};
     43 char assumption_2[sizeof(ti_int)*CHAR_BIT == 128] = {0};
     44 char assumption_3[sizeof(float)*CHAR_BIT == 32] = {0};
     45 
     46 #endif
     47 
     48 int main()
     49 {
     50 #if __x86_64
     51     if (test__floattisf(0, 0.0F))
     52         return 1;
     53 
     54     if (test__floattisf(1, 1.0F))
     55         return 1;
     56     if (test__floattisf(2, 2.0F))
     57         return 1;
     58     if (test__floattisf(-1, -1.0F))
     59         return 1;
     60     if (test__floattisf(-2, -2.0F))
     61         return 1;
     62 
     63     if (test__floattisf(0x7FFFFF8000000000LL, 0x1.FFFFFEp+62F))
     64         return 1;
     65     if (test__floattisf(0x7FFFFF0000000000LL, 0x1.FFFFFCp+62F))
     66         return 1;
     67 
     68     if (test__floattisf(make_ti(0xFFFFFFFFFFFFFFFFLL, 0x8000008000000000LL),
     69                         -0x1.FFFFFEp+62F))
     70         return 1;
     71     if (test__floattisf(make_ti(0xFFFFFFFFFFFFFFFFLL, 0x8000010000000000LL),
     72                         -0x1.FFFFFCp+62F))
     73         return 1;
     74 
     75     if (test__floattisf(make_ti(0xFFFFFFFFFFFFFFFFLL, 0x8000000000000000LL),
     76                         -0x1.000000p+63F))
     77         return 1;
     78     if (test__floattisf(make_ti(0xFFFFFFFFFFFFFFFFLL, 0x8000000000000001LL),
     79                         -0x1.000000p+63F))
     80         return 1;
     81 
     82     if (test__floattisf(0x0007FB72E8000000LL, 0x1.FEDCBAp+50F))
     83         return 1;
     84 
     85     if (test__floattisf(0x0007FB72EA000000LL, 0x1.FEDCBAp+50F))
     86         return 1;
     87     if (test__floattisf(0x0007FB72EB000000LL, 0x1.FEDCBAp+50F))
     88         return 1;
     89     if (test__floattisf(0x0007FB72EBFFFFFFLL, 0x1.FEDCBAp+50F))
     90         return 1;
     91     if (test__floattisf(0x0007FB72EC000000LL, 0x1.FEDCBCp+50F))
     92         return 1;
     93     if (test__floattisf(0x0007FB72E8000001LL, 0x1.FEDCBAp+50F))
     94         return 1;
     95 
     96     if (test__floattisf(0x0007FB72E6000000LL, 0x1.FEDCBAp+50F))
     97         return 1;
     98     if (test__floattisf(0x0007FB72E7000000LL, 0x1.FEDCBAp+50F))
     99         return 1;
    100     if (test__floattisf(0x0007FB72E7FFFFFFLL, 0x1.FEDCBAp+50F))
    101         return 1;
    102     if (test__floattisf(0x0007FB72E4000001LL, 0x1.FEDCBAp+50F))
    103         return 1;
    104     if (test__floattisf(0x0007FB72E4000000LL, 0x1.FEDCB8p+50F))
    105         return 1;
    106 
    107     if (test__floattisf(make_ti(0x0007FB72E8000000LL, 0), 0x1.FEDCBAp+114F))
    108         return 1;
    109 
    110     if (test__floattisf(make_ti(0x0007FB72EA000000LL, 0), 0x1.FEDCBAp+114F))
    111         return 1;
    112     if (test__floattisf(make_ti(0x0007FB72EB000000LL, 0), 0x1.FEDCBAp+114F))
    113         return 1;
    114     if (test__floattisf(make_ti(0x0007FB72EBFFFFFFLL, 0), 0x1.FEDCBAp+114F))
    115         return 1;
    116     if (test__floattisf(make_ti(0x0007FB72EC000000LL, 0), 0x1.FEDCBCp+114F))
    117         return 1;
    118     if (test__floattisf(make_ti(0x0007FB72E8000001LL, 0), 0x1.FEDCBAp+114F))
    119         return 1;
    120 
    121     if (test__floattisf(make_ti(0x0007FB72E6000000LL, 0), 0x1.FEDCBAp+114F))
    122         return 1;
    123     if (test__floattisf(make_ti(0x0007FB72E7000000LL, 0), 0x1.FEDCBAp+114F))
    124         return 1;
    125     if (test__floattisf(make_ti(0x0007FB72E7FFFFFFLL, 0), 0x1.FEDCBAp+114F))
    126         return 1;
    127     if (test__floattisf(make_ti(0x0007FB72E4000001LL, 0), 0x1.FEDCBAp+114F))
    128         return 1;
    129     if (test__floattisf(make_ti(0x0007FB72E4000000LL, 0), 0x1.FEDCB8p+114F))
    130         return 1;
    131 
    132 #else
    133     printf("skipped\n");
    134 #endif
    135    return 0;
    136 }
    137