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/* { dg-do run } */
/* { dg-options "-std=gnu99 -O" } */
/* DFP TR 24732 == WG14 / N1176, N1312 */
/* Based on a test from Fred Tydeman. */
extern void abort (void);
int failures = 0;
#ifdef DBG
#include <stdio.h>
#define FAILURE(MSG) { printf ("line %d: %s\n", __LINE__, MSG); failures++; }
#else
#define FAILURE(MSG) failures++;
#endif
/* Test runtime computations. */
void
runtime32 (void)
{
volatile float v1 = 28.f, v2 = 3.f, v3 = 9.f, v4 = 31.f, v5 = 3.f, v6 = 10.f;
float b32 = (float)((v1/v2-v3) - (v4/v5-v6));
_Decimal32 d32 = (float)((v1/v2-v3) - (v4/v5-v6));
if (b32)
FAILURE ("runtime: b32 should be zero")
if (d32)
FAILURE ("runtime: d32 should be zero")
}
void
runtime64 (void)
{
volatile double v1 = 28., v2 = 3., v3 = 9., v4 = 31., v5 = 3., v6 = 10.;
double b64 = (double)((v1/v2-v3) - (v4/v5-v6));
_Decimal64 d64 = (double)((v1/v2-v3) - (v4/v5-v6));
if (b64)
FAILURE ("runtime: b64 should be zero")
if (d64)
FAILURE ("runtime: d64 should be zero")
}
void
runtime128 (void)
{
volatile long double v1 = 28.l, v2 = 3.l, v3 = 9.l,
v4 = 31.l, v5 = 3.l, v6 = 10.l;
long double b128 = (long double)((v1/v2-v3) - (v4/v5-v6));
_Decimal128 d128 = (long double)((v1/v2-v3) - (v4/v5-v6));
if (b128)
FAILURE ("runtime: b128 should be zero")
if (d128)
FAILURE ("runtime: d128 should be zero")
}
/* Test constant folding. */
void
fold32 (void)
{
double d32 = (float)((28.f/3.f-9.f) - (31.f/3.f-10.f));
_Decimal32 b32 = (float)((28.f/3.f-9.f) - (31.f/3.f-10.f));
if (b32)
FAILURE ("fold: b32 should be zero")
if (d32)
FAILURE ("fold: d32 should be zero")
}
void
fold64 (void)
{
double b64 = (double)((28./3.-9.) - (31./3.-10.));
_Decimal64 d64 = (double)((28./3.-9.) - (31./3.-10.));
if (b64)
FAILURE ("fold: b64 should be zero")
if (d64)
FAILURE ("fold: d64 should be zero")
}
void
fold128 (void)
{
long double b128 = (long double)((28./3.-9.) - (31./3.-10.));
_Decimal128 d128 = (long double)((28./3.-9.) - (31./3.-10.));
if (b128)
FAILURE ("fold: b128 should be zero")
if (d128)
FAILURE ("fold: d128 should be zero")
}
int
main ()
{
runtime32 ();
runtime64 ();
runtime128 ();
fold32 ();
fold64 ();
fold128 ();
if (failures != 0)
abort ();
return 0;
}
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