106 lines · c
1// RUN: %clang_builtins %s %librt -o %t && %run %t2// REQUIRES: librt_has_fixxfdi3 4#include "int_lib.h"5#include <stdio.h>6 7 8#if HAS_80_BIT_LONG_DOUBLE9// Returns: convert a to a signed long long, rounding toward zero.10 11// Assumption: long double is an intel 80 bit floating point type padded with 6 bytes12// su_int is a 32 bit integral type13// value in long double is representable in di_int (no range checking performed)14 15// gggg gggg gggg gggg gggg gggg gggg gggg | gggg gggg gggg gggg seee eeee eeee eeee |16// 1mmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm | mmmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm17 18COMPILER_RT_ABI di_int __fixxfdi(long double a);19 20int test__fixxfdi(long double a, di_int expected)21{22 di_int x = __fixxfdi(a);23 if (x != expected)24 printf("error in __fixxfdi(%LA) = %llX, expected %llX\n",25 a, x, expected);26 return x != expected;27}28 29char assumption_1[sizeof(di_int) == 2*sizeof(si_int)] = {0};30char assumption_2[sizeof(su_int)*CHAR_BIT == 32] = {0};31char assumption_3[sizeof(long double)*CHAR_BIT == 128] = {0};32#endif33 34int main()35{36#if HAS_80_BIT_LONG_DOUBLE37 if (test__fixxfdi(0.0, 0))38 return 1;39 40 if (test__fixxfdi(0.5, 0))41 return 1;42 if (test__fixxfdi(0.99, 0))43 return 1;44 if (test__fixxfdi(1.0, 1))45 return 1;46 if (test__fixxfdi(1.5, 1))47 return 1;48 if (test__fixxfdi(1.99, 1))49 return 1;50 if (test__fixxfdi(2.0, 2))51 return 1;52 if (test__fixxfdi(2.01, 2))53 return 1;54 if (test__fixxfdi(-0.5, 0))55 return 1;56 if (test__fixxfdi(-0.99, 0))57 return 1;58 if (test__fixxfdi(-1.0, -1))59 return 1;60 if (test__fixxfdi(-1.5, -1))61 return 1;62 if (test__fixxfdi(-1.99, -1))63 return 1;64 if (test__fixxfdi(-2.0, -2))65 return 1;66 if (test__fixxfdi(-2.01, -2))67 return 1;68 69 if (test__fixxfdi(0x1.FFFFFEp+62, 0x7FFFFF8000000000LL))70 return 1;71 if (test__fixxfdi(0x1.FFFFFCp+62, 0x7FFFFF0000000000LL))72 return 1;73 74 if (test__fixxfdi(-0x1.FFFFFEp+62, 0x8000008000000000LL))75 return 1;76 if (test__fixxfdi(-0x1.FFFFFCp+62, 0x8000010000000000LL))77 return 1;78 79 if (test__fixxfdi(0x1.FFFFFFFFFFFFFp+62, 0x7FFFFFFFFFFFFC00LL))80 return 1;81 if (test__fixxfdi(0x1.FFFFFFFFFFFFEp+62, 0x7FFFFFFFFFFFF800LL))82 return 1;83 84 if (test__fixxfdi(-0x1.FFFFFFFFFFFFFp+62, 0x8000000000000400LL))85 return 1;86 if (test__fixxfdi(-0x1.FFFFFFFFFFFFEp+62, 0x8000000000000800LL))87 return 1;88 89 if (test__fixxfdi(0x1.FFFFFFFFFFFFFFFCp+62L, 0x7FFFFFFFFFFFFFFFLL))90 return 1;91 if (test__fixxfdi(0x1.FFFFFFFFFFFFFFF8p+62L, 0x7FFFFFFFFFFFFFFELL))92 return 1;93 94 if (test__fixxfdi(-0x1.0000000000000000p+63L, 0x8000000000000000LL))95 return 1;96 if (test__fixxfdi(-0x1.FFFFFFFFFFFFFFFCp+62L, 0x8000000000000001LL))97 return 1;98 if (test__fixxfdi(-0x1.FFFFFFFFFFFFFFF8p+62L, 0x8000000000000002LL))99 return 1;100 101#else102 printf("skipped\n");103#endif104 return 0;105}106