convert-complex.c

来自「用于进行gcc测试」· C语言 代码 · 共 132 行

/* { dg-options "-O3" } */

/* N1150 5.3 Conversions between decimal floating and complex.
   C99 6.3.1.7 Conversions, arithmetic operands, real and complex.  */

extern void abort(void);
static int failcnt;

/* Support compiling the test to report individual failures; default is
   to abort as soon as a check fails.  */
#ifdef DBG
#include <stdio.h>
#define FAILURE { printf ("failed at line %d\n", __LINE__); failcnt++; }
#else
#define FAILURE abort ();
#endif

int
main ()
{
  _Complex float cf;
  _Complex double cd;
  _Complex long double cld;

  _Decimal32 d32;
  _Decimal64 d64;
  _Decimal128 d128;

  cf = 2.0f *  __extension__ 1i + 3.0f;
  cd = 2.0 * __extension__ 1i + 3.0;
  cld = 2.0l * __extension__ 1i + 3.0l;

  /* Convert complex to decimal floating.  */
  d32 = cf;
  d64 = cd;
  d128 = cld;

  if (d32 != 3.0DF)
    FAILURE
  if (d64 != 3.0dd)
    FAILURE
  if (d128 != 3.0dl)
    FAILURE

  /* Convert decimal floating to complex.  */
  d32 = 2.5DF;
  d64 = 1.5DD;
  d128 = 2.5DL;

  cf = d32;
  cd = d64;
  cld = d128;
 
  /* N1107 5.3 Conversions between decimal floating and complex. 
     When a value of decimal floating type converted to a complex
     type, the real part of the complex result value is undermined
     by the rules of conversions in N1107 5.2 and the imaginary part
     of the complex result value is zero.  */

  if (__real__ cf != 2.5f)
    FAILURE
  if (__real__ cd !=1.5)
    FAILURE
  if (__real__ cld !=  2.5)
    FAILURE
  if (__imag__ cf != 0.0f)
    FAILURE
  if (__imag__ cd != 0.0)
    FAILURE
  if (__imag__ cld != 0.0l)
    FAILURE

  /*  Verify that the conversions from DFP types to complex is
      determined by the rules of conversion to the real part.  */

  /*  Convert _Decimal64 to _Complex float.  */
  d64 = 0.125dl;
  cf = d64;
  if (__real__ cf != 0.125f)
    FAILURE
  /*  Convert _Decimal128 to _Complex double.  */
  d128 = 1.25E-7dl;
  cd = d128;
  if (__real__ cd != 1.25E-7)
    FAILURE

  /*  Verify that conversion from complex to decimal floating types
      results in the value of the real part converted to the result
      type according to the rules of conversion between those types.  */

  /*  Convert _Complex float to decimal float types.  */
  cf = 2.0f *  __extension__ 1i + 2.25f;
  d32 = cf;
  d64 = cf;
  d128 = cf;
  if (d32 != 2.25DF)
    FAILURE
  if (d64 != 2.25DD)
    FAILURE
  if (d128 != 2.25DL)
    FAILURE

  /*  Convert _Complex double to decimal float types.  */
  cd = 2.0 *  __extension__ 1i + 1.25;
  d32 = cd;
  d64 = cd;
  d128 = cd;
  if (d32 != 1.25DF)
    FAILURE
  if (d64 != 1.25DD)
    FAILURE
  if (d128 != 1.25DL)
    FAILURE

  /*  Convert _Complex long double to decimal float types.  */
  cld = 2.0l *  __extension__ 1i + 0.0625l;
  d32 = cld;
  d64 = cld;
  d128 = cld;
  if (d32 != 0.0625DF)
    FAILURE
  if (d64 != 0.0625DD)
    FAILURE
  if (d128 != 0.0625DL)
    FAILURE

  if (failcnt != 0)
    abort ();

  return 0;
}