| 1 | /* |
| 2 | * Test the CLGEBR instruction. |
| 3 | * |
| 4 | * SPDX-License-Identifier: GPL-2.0-or-later |
| 5 | */ |
| 6 | #include <assert.h> |
| 7 | #include <fenv.h> |
| 8 | #include <stdlib.h> |
| 9 | |
| 10 | int main(void) |
| 11 | { |
| 12 | float r2 = -1; |
| 13 | long long r1; |
| 14 | int cc; |
| 15 | |
| 16 | feclearexcept(FE_ALL_EXCEPT); |
| 17 | asm("clgebr %[r1],%[m3],%[r2],%[m4]\n" |
| 18 | "ipm %[cc]\n" |
| 19 | : [r1] "=r" (r1) |
| 20 | , [cc] "=r" (cc) |
| 21 | : [m3] "i" (5) /* round toward 0 */ |
| 22 | , [r2] "f" (r2) |
| 23 | , [m4] "i" (8) /* bit 0 is set, but must be ignored; XxC is not set */ |
| 24 | : "cc"); |
| 25 | cc >>= 28; |
| 26 | |
| 27 | assert(r1 == 0); |
| 28 | assert(cc == 3); |
| 29 | assert(fetestexcept(FE_ALL_EXCEPT) == (FE_INVALID | FE_INEXACT)); |
| 30 | |
| 31 | return EXIT_SUCCESS; |
| 32 | } |