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/* { dg-options "-std=gnu99 -O0" } */
/* N1150 5.2 Conversions among decimal floating types and between
decimal floating types and generic floating types.
C99 6.3.1.5(3) New.
Test various conversions involving decimal floating types. */
#ifndef __STDC_WANT_DEC_FP__
#define __STDC_WANT_DEC_FP__ 1
#endif
#include <float.h>
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
volatile _Decimal32 d32;
volatile _Decimal64 d64;
volatile _Decimal128 d128;
int
main ()
{
/* Conversions to larger types. */
d32 = 123.4df;
d64 = d32;
if (d64 != 123.4dd)
FAILURE
d128 = d32;
if (d128 != 123.4dl)
FAILURE
d64 = 345.678dd;
d128 = d64;
if (d128 != 345.678dl)
FAILURE
/* Conversions to smaller types for which the value fits. */
d64 = 3456.789dd;
d32 = d64;
if (d32 != 3456.789df)
FAILURE
d128 = 123.4567dl;
d32 = d128;
if (d32 != 123.4567df)
FAILURE
d128 = 1234567890.123456dl;
d64 = d128;
if (d64 != 1234567890.123456dd)
FAILURE
/* Test demotion to non-representable decimal floating type. */
/* Assumes a default rounding mode of 'near'. This uses the rules
describe in the 27 July 2005 draft of IEEE 754r, which are much
more clear that what's described in draft 5 of N1107. */
/* Rounds to what _Decimal32 can handle. */
d64 = 9.99999949E96DD;
d32 = d64;
if (d32 != DEC32_MAX)
FAILURE
/* Rounds to more than _Decimal32 can handle. */
d64 = 9.9999995E96DD;
d32 = d64;
if (d32 != __builtin_infd32())
FAILURE
/* Rounds to what _Decimal32 can handle. */
d128 = 9.99999949E96DD;
d32 = d128;
if (d32 != DEC32_MAX)
FAILURE
/* Rounds to more than _Decimal32 can handle. */
d128= 9.9999995E96DD;
d32 = d128;
if (d32 != __builtin_infd32())
FAILURE
/* Rounds to what _Decimal64 can handle. */
d128 = 9.99999999999999949E384DL;
d64 = d128;
if (d64 != DEC64_MAX)
FAILURE
/* Rounds to more than _Decimal64 can handle. */
d128 = 9.9999999999999995E384DL;
d64 = d128;
if (d64 != __builtin_infd64())
FAILURE
if (failcnt != 0)
abort ();
return 0;
}
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