1 /* 2 * Test the MXDB and MXDBR instructions. 3 * 4 * SPDX-License-Identifier: GPL-2.0-or-later 5 */ 6 #include <assert.h> 7 #include <stdlib.h> 8 9 int main(void) 10 { 11 union { 12 double d[2]; 13 long double ld; 14 } a; 15 double b; 16 17 a.d[0] = 1.2345; 18 a.d[1] = 999; 19 b = 6.789; 20 asm("mxdb %[a],%[b]" : [a] "+f" (a.ld) : [b] "R" (b)); 21 assert(a.ld > 8.38 && a.ld < 8.39); 22 23 a.d[0] = 1.2345; 24 a.d[1] = 999; 25 b = 6.789; 26 asm("mxdbr %[a],%[b]" : [a] "+f" (a.ld) : [b] "f" (b)); 27 assert(a.ld > 8.38 && a.ld < 8.39); 28 29 return EXIT_SUCCESS; 30 } 31