93 lines · c
1// RUN: %clang_builtins %s %librt -o %t && %run %t2// REQUIRES: librt_has_multf33 4#include <stdio.h>5 6#if __LDBL_MANT_DIG__ == 1137 8#include "int_lib.h"9#include "fp_test.h"10 11// Returns: a * b12COMPILER_RT_ABI long double __multf3(long double a, long double b);13 14int test__multf3(long double a, long double b,15 uint64_t expectedHi, uint64_t expectedLo)16{17 long double x = __multf3(a, b);18 int ret = compareResultF128(x, expectedHi, expectedLo);19 20 if (ret){21 printf("error in test__multf3(%.20Lf, %.20Lf) = %.20Lf, "22 "expected %.20Lf\n", a, b, x,23 fromRep128(expectedHi, expectedLo));24 }25 return ret;26}27 28char assumption_1[sizeof(long double) * CHAR_BIT == 128] = {0};29 30#endif31 32int main()33{34#if __LDBL_MANT_DIG__ == 11335 // qNaN * any = qNaN36 if (test__multf3(makeQNaN128(),37 0x1.23456789abcdefp+5L,38 UINT64_C(0x7fff800000000000),39 UINT64_C(0x0)))40 return 1;41 // NaN * any = NaN42 if (test__multf3(makeNaN128(UINT64_C(0x800030000000)),43 0x1.23456789abcdefp+5L,44 UINT64_C(0x7fff800000000000),45 UINT64_C(0x0)))46 return 1;47 // inf * any = inf48 if (test__multf3(makeInf128(),49 0x1.23456789abcdefp+5L,50 UINT64_C(0x7fff000000000000),51 UINT64_C(0x0)))52 return 1;53 // any * any54 if (test__multf3(0x1.2eab345678439abcdefea56782346p+5L,55 0x1.edcb34a235253948765432134674fp-1L,56 UINT64_C(0x400423e7f9e3c9fc),57 UINT64_C(0xd906c2c2a85777c4)))58 return 1;59 if (test__multf3(0x1.353e45674d89abacc3a2ebf3ff4ffp-50L,60 0x1.ed8764648369535adf4be3214567fp-9L,61 UINT64_C(0x3fc52a163c6223fc),62 UINT64_C(0xc94c4bf0430768b4)))63 return 1;64 if (test__multf3(0x1.234425696abcad34a35eeffefdcbap+456L,65 0x451.ed98d76e5d46e5f24323dff21ffp+600L,66 UINT64_C(0x44293a91de5e0e94),67 UINT64_C(0xe8ed17cc2cdf64ac)))68 return 1;69 if (test__multf3(0x1.4356473c82a9fabf2d22ace345defp-234L,70 0x1.eda98765476743ab21da23d45678fp-455L,71 UINT64_C(0x3d4f37c1a3137cae),72 UINT64_C(0xfc6807048bc2836a)))73 return 1;74 // underflow75 if (test__multf3(0x1.23456734245345p-10000L,76 0x1.edcba524498724p-6497L,77 UINT64_C(0x0),78 UINT64_C(0x0)))79 return 1;80 // test carry between lo and hi in widening multiply81 if (test__multf3(0x0.7fffffffffffffffffffffffffffp-16382L,82 0x1.7fffffffffffffffffffffffffffp+1L,83 UINT64_C(0x00017fffffffffff),84 UINT64_C(0xfffffffffffffffc)))85 return 1;86 87#else88 printf("skipped\n");89 90#endif91 return 0;92}93