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

     1  /* -*-c-*- */
     2  #include "ffitest.h"
     3  #include <complex.h>
     4  
     5  static void cls_ret_complex_fn(ffi_cif* cif __UNUSED__, void* resp, void** args,
     6  			      void* userdata __UNUSED__)
     7   {
     8     _Complex T_C_TYPE *pa;
     9     _Complex T_C_TYPE *pr;
    10     pa = (_Complex T_C_TYPE *)args[0];
    11     pr = (_Complex T_C_TYPE *)resp;
    12     *pr = *pa;
    13  
    14     printf("%.6f,%.6fi: %.6f,%.6fi\n",
    15  	  T_CONV creal (*pa), T_CONV cimag (*pa),
    16  	  T_CONV creal (*pr), T_CONV cimag (*pr));
    17   }
    18  typedef _Complex T_C_TYPE (*cls_ret_complex)(_Complex T_C_TYPE);
    19  
    20  int main (void)
    21  {
    22    ffi_cif cif;
    23    void *code;
    24    ffi_closure *pcl = ffi_closure_alloc(sizeof(ffi_closure), &code);
    25    ffi_type * cl_arg_types[2];
    26    _Complex T_C_TYPE res;
    27  
    28    cl_arg_types[0] = &T_FFI_TYPE;
    29    cl_arg_types[1] = NULL;
    30  
    31    /* Initialize the cif */
    32    CHECK(ffi_prep_cif(&cif, FFI_DEFAULT_ABI, 1,
    33  		     &T_FFI_TYPE, cl_arg_types) == FFI_OK);
    34  
    35    CHECK(ffi_prep_closure_loc(pcl, &cif, cls_ret_complex_fn, NULL, code)  == FFI_OK);
    36  
    37    res = (*((cls_ret_complex)code))(0.125 + 128.0 * I);
    38    printf("res: %.6f,%.6fi\n", T_CONV creal (res), T_CONV cimag (res));
    39    CHECK (res == (0.125 + 128.0 * I));
    40  
    41    exit(0);
    42  }