1 //===--------------- subtf3_test.c - Test __subtf3 ------------------------===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is dual licensed under the MIT and the University of Illinois Open 6 // Source Licenses. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 // 10 // This file tests __subtf3 for the compiler_rt library. 11 // 12 //===----------------------------------------------------------------------===// 13 14 #include <stdio.h> 15 16 #if __LDBL_MANT_DIG__ == 113 17 18 #include "fp_test.h" 19 20 // Returns: a - b 21 long double __subtf3(long double a, long double b); 22 23 int test__subtf3(long double a, long double b, 24 uint64_t expectedHi, uint64_t expectedLo) 25 { 26 long double x = __subtf3(a, b); 27 int ret = compareResultLD(x, expectedHi, expectedLo); 28 29 if (ret){ 30 printf("error in test__subtf3(%.20Lf, %.20Lf) = %.20Lf, " 31 "expected %.20Lf\n", a, b, x, 32 fromRep128(expectedHi, expectedLo)); 33 } 34 return ret; 35 } 36 37 char assumption_1[sizeof(long double) * CHAR_BIT == 128] = {0}; 38 39 #endif 40 41 int main() 42 { 43 #if __LDBL_MANT_DIG__ == 113 44 // qNaN - any = qNaN 45 if (test__subtf3(makeQNaN128(), 46 0x1.23456789abcdefp+5L, 47 UINT64_C(0x7fff800000000000), 48 UINT64_C(0x0))) 49 return 1; 50 // NaN - any = NaN 51 if (test__subtf3(makeNaN128(UINT64_C(0x800030000000)), 52 0x1.23456789abcdefp+5L, 53 UINT64_C(0x7fff800000000000), 54 UINT64_C(0x0))) 55 return 1; 56 // inf - any = inf 57 if (test__subtf3(makeInf128(), 58 0x1.23456789abcdefp+5L, 59 UINT64_C(0x7fff000000000000), 60 UINT64_C(0x0))) 61 return 1; 62 // any - any 63 if (test__subtf3(0x1.234567829a3bcdef5678ade36734p+5L, 64 0x1.ee9d7c52354a6936ab8d7654321fp-1L, 65 UINT64_C(0x40041b8af1915166), 66 UINT64_C(0xa44a7bca780a166c))) 67 return 1; 68 69 #else 70 printf("skipped\n"); 71 72 #endif 73 return 0; 74 } 75
