tests/fp/fp-test-log2.c

2  * fp-test-log2.c - test QEMU's softfloat log2
7  *   See the COPYING file in the top-level directory.
28     uint64_t ulp = UINT64_MAX;  in compare()  local
33     msb = 63 - __builtin_clzll(real.i ^ soft.i);  in compare()
37             ulp = real.i - soft.i;  in compare()
39             ulp = soft.i - real.i;  in compare()
43     /* glibc allows 3 ulp error in its libm-test-ulps; allow 4 here */  in compare()
44     if (!exact && ulp <= 4) {  in compare()
57                (int)(soft.i >> 52) - (int)(real.i >> 52));  in compare()
59         printf("Error in fraction: %" PRIu64 " ulp\n\n", ulp);  in compare()
70     float_status qsf = {0};  in main()
74     set_float_default_nan_pattern(0b01000000, &qsf);  in main()
78     real.d = -__builtin_inf();  in main()
97     test.d = 0x1p64;  in main()
107     for (i = 0; i < 10000; ++i) {  in main()
119     return 0;  in main()