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python3.2  3.2.2
Classes | Defines | Functions
float1.c File Reference
#include "ffitest.h"
#include "float.h"

Go to the source code of this file.


union  value_type


#define CANARY   0xba


static double dblit (float f)
int main (void)

Class Documentation

union value_type

Definition at line 11 of file float1.c.

Class Members
unsigned char c
double d

Define Documentation

#define CANARY   0xba

Definition at line 17 of file float1.c.

Function Documentation

static double dblit ( float  f) [static]

Definition at line 19 of file float1.c.

  return f/3.0;

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int main ( void  )

Definition at line 24 of file float1.c.

  ffi_cif cif;
  ffi_type *args[MAX_ARGS];
  void *values[MAX_ARGS];
  float f;
  value_type result[2];
  unsigned int i;

  args[0] = &ffi_type_float;
  values[0] = &f;

  /* Initialize the cif */
  CHECK(ffi_prep_cif(&cif, FFI_DEFAULT_ABI, 1,
                   &ffi_type_double, args) == FFI_OK);

  f = 3.14159;

  /* Put a canary in the return array.  This is a regression test for
     a buffer overrun.  */
  memset(result[1].c, CANARY, sizeof (double));

  ffi_call(&cif, FFI_FN(dblit), &result[0].d, values);

  /* These are not always the same!! Check for a reasonable delta */

  CHECK(result[0].d - dblit(f) < DBL_EPSILON);

  /* Check the canary.  */
  for (i = 0; i < sizeof (double); ++i)
    CHECK(result[1].c[i] == CANARY);



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