1 /* Test pseudo-denormal operations. */ 2 3 #include <stdint.h> 4 #include <stdio.h> 5 6 union u { 7 struct { uint64_t sig; uint16_t sign_exp; } s; 8 long double ld; 9 }; 10 11 volatile union u ld_pseudo_m16382 = { .s = { UINT64_C(1) << 63, 0 } }; 12 13 volatile long double ld_res; 14 15 int main(void) 16 { 17 int ret = 0; 18 ld_res = ld_pseudo_m16382.ld + ld_pseudo_m16382.ld; 19 if (ld_res != 0x1p-16381L) { 20 printf("FAIL: pseudo-denormal add\n"); 21 ret = 1; 22 } 23 if (ld_pseudo_m16382.ld != 0x1p-16382L) { 24 printf("FAIL: pseudo-denormal compare\n"); 25 ret = 1; 26 } 27 return ret; 28 } 29