File: fp-int-convert-float128-timode-3.c

package info (click to toggle)
gcc-riscv64-unknown-elf 8.3.0.2019.08%2Bdfsg-1
  • links: PTS, VCS
  • area: main
  • in suites: bullseye
  • size: 680,956 kB
  • sloc: ansic: 3,237,715; cpp: 896,882; ada: 772,854; f90: 144,254; asm: 68,788; makefile: 67,456; sh: 29,743; exp: 28,045; objc: 15,273; fortran: 11,885; python: 7,369; pascal: 5,375; awk: 3,725; perl: 2,872; yacc: 316; xml: 311; ml: 285; lex: 198; haskell: 122
file content (26 lines) | stat: -rw-r--r-- 749 bytes parent folder | download | duplicates (4) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
 
/* Test for correct rounding of conversions from __int128 to
   __float128.  */
/* { dg-do run } */
/* { dg-require-effective-target __float128 } */
/* { dg-require-effective-target base_quadfloat_support } */
/* { dg-require-effective-target int128 } */
/* { dg-options "-frounding-math" } */
/* { dg-add-options __float128 } */

#include <fenv.h>
#include <stdlib.h>

int
main (void)
{
  volatile unsigned long long h = -1ULL;
  volatile unsigned __int128 u128 = (((unsigned __int128) h) << 64) | h;
  volatile __int128 s128 = u128 >> 1;
  fesetround (FE_TOWARDZERO);
  __float128 ru = u128, rs = s128;
  if (ru != 0x1.ffffffffffffffffffffffffffffp127q)
    abort ();
  if (rs != 0x1.ffffffffffffffffffffffffffffp126q)
    abort ();
  exit (0);
}