github.com/prattmic/llgo-embedded@v0.0.0-20150820070356-41cfecea0e1e/third_party/gofrontend/libffi/testsuite/libffi.complex/cls_align_complex.inc (about)

     1  /* -*-c-*- */
     2  #include "ffitest.h"
     3  #include <complex.h>
     4  
     5  typedef struct cls_struct_align {
     6    unsigned char a;
     7    _Complex T_C_TYPE b;
     8    unsigned char c;
     9  } cls_struct_align;
    10  
    11  cls_struct_align cls_struct_align_fn(
    12  	struct cls_struct_align a1, struct cls_struct_align a2)
    13  {
    14    struct cls_struct_align result;
    15  
    16    result.a = a1.a + a2.a;
    17    result.b = a1.b + a2.b;
    18    result.c = a1.c + a2.c;
    19  
    20    printf("%d %f,%fi %d %d %f,%fi %d: %d %f,%fi %d\n",
    21  	 a1.a, T_CONV creal (a1.b), T_CONV cimag (a1.b), a1.c,
    22  	 a2.a, T_CONV creal (a2.b), T_CONV cimag (a2.b), a2.c,
    23  	 result.a, T_CONV creal (result.b), T_CONV cimag (result.b), result.c);
    24  
    25    return  result;
    26  }
    27  
    28  static void
    29  cls_struct_align_gn(ffi_cif* cif __UNUSED__, void* resp, void** args,
    30  		    void* userdata __UNUSED__)
    31  {
    32  
    33    struct cls_struct_align a1, a2;
    34  
    35    a1 = *(struct cls_struct_align*)(args[0]);
    36    a2 = *(struct cls_struct_align*)(args[1]);
    37  
    38    *(cls_struct_align*)resp = cls_struct_align_fn(a1, a2);
    39  }
    40  
    41  int main (void)
    42  {
    43    ffi_cif cif;
    44    void *code;
    45    ffi_closure *pcl = ffi_closure_alloc(sizeof(ffi_closure), &code);
    46    void* args_c[5];
    47    ffi_type* cls_struct_fields[4];
    48    ffi_type cls_struct_type;
    49    ffi_type* c_arg_types[5];
    50  
    51    struct cls_struct_align g_c = { 12, 4951 + 7 * I, 127 };
    52    struct cls_struct_align f_c = { 1, 9320 + 1 * I, 13 };
    53    struct cls_struct_align res_c;
    54  
    55    cls_struct_type.size = 0;
    56    cls_struct_type.alignment = 0;
    57    cls_struct_type.type = FFI_TYPE_STRUCT;
    58    cls_struct_type.elements = cls_struct_fields;
    59  
    60    cls_struct_fields[0] = &ffi_type_uchar;
    61    cls_struct_fields[1] = &T_FFI_TYPE;
    62    cls_struct_fields[2] = &ffi_type_uchar;
    63    cls_struct_fields[3] = NULL;
    64  
    65    c_arg_types[0] = &cls_struct_type;
    66    c_arg_types[1] = &cls_struct_type;
    67    c_arg_types[2] = NULL;
    68  
    69    CHECK(ffi_prep_cif(&cif, FFI_DEFAULT_ABI, 2, &cls_struct_type,
    70  		     c_arg_types) == FFI_OK);
    71  
    72    args_c[0] = &g_c;
    73    args_c[1] = &f_c;
    74    args_c[2] = NULL;
    75  
    76    ffi_call(&cif, FFI_FN(cls_struct_align_fn), &res_c, args_c);
    77    /* { dg-output "12 4951,7i 127 1 9320,1i 13: 13 14271,8i 140" } */
    78    printf("res: %d %f,%fi %d\n",
    79  	 res_c.a, T_CONV  creal (res_c.b), T_CONV  cimag (res_c.b), res_c.c);
    80    /* { dg-output "\nres: 13 14271,8i 140" } */
    81  
    82    CHECK(ffi_prep_closure_loc(pcl, &cif, cls_struct_align_gn, NULL, code) == FFI_OK);
    83  
    84    res_c = ((cls_struct_align(*)(cls_struct_align, cls_struct_align))(code))(g_c, f_c);
    85    /* { dg-output "\n12 4951,7i 127 1 9320,1i 13: 13 14271,8i 140" } */
    86    printf("res: %d %f,%fi %d\n",
    87  	 res_c.a, T_CONV  creal (res_c.b), T_CONV  cimag (res_c.b), res_c.c);
    88    /* { dg-output "\nres: 13 14271,8i 140" } */
    89  
    90    exit(0);
    91  }