138 lines · c
1// RUN: %clang_builtins %s %librt -o %t && %run %t2// REQUIRES: librt_has_fixxfti3// REQUIRES: x86-target-arch4 5#include "int_lib.h"6#include <stdio.h>7 8#if defined(CRT_HAS_128BIT) && HAS_80_BIT_LONG_DOUBLE9 10// Returns: convert a to a signed long long, rounding toward zero.11 12// Assumption: long double is an intel 80 bit floating point type padded with 6 bytes13// su_int is a 32 bit integral type14// value in long double is representable in ti_int (no range checking performed)15 16// gggg gggg gggg gggg gggg gggg gggg gggg | gggg gggg gggg gggg seee eeee eeee eeee |17// 1mmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm | mmmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm18 19COMPILER_RT_ABI ti_int __fixxfti(long double a);20 21int test__fixxfti(long double a, ti_int expected)22{23 ti_int x = __fixxfti(a);24 if (x != expected)25 {26 utwords xt;27 xt.all = x;28 utwords expectedt;29 expectedt.all = expected;30 printf("error in __fixxfti(%LA) = 0x%.16llX%.16llX, expected 0x%.16llX%.16llX\n",31 a, xt.s.high, xt.s.low, expectedt.s.high, expectedt.s.low);32 }33 return x != expected;34}35 36COMPILE_TIME_ASSERT(sizeof(ti_int) == 2*sizeof(di_int));37COMPILE_TIME_ASSERT(sizeof(su_int)*CHAR_BIT == 32);38COMPILE_TIME_ASSERT(sizeof(long double)*CHAR_BIT == 128);39 40#endif41 42int main()43{44#if defined(CRT_HAS_128BIT) && HAS_80_BIT_LONG_DOUBLE45 if (test__fixxfti(0.0, 0))46 return 1;47 48 if (test__fixxfti(0.5, 0))49 return 1;50 if (test__fixxfti(0.99, 0))51 return 1;52 if (test__fixxfti(1.0, 1))53 return 1;54 if (test__fixxfti(1.5, 1))55 return 1;56 if (test__fixxfti(1.99, 1))57 return 1;58 if (test__fixxfti(2.0, 2))59 return 1;60 if (test__fixxfti(2.01, 2))61 return 1;62 if (test__fixxfti(-0.5, 0))63 return 1;64 if (test__fixxfti(-0.99, 0))65 return 1;66 if (test__fixxfti(-1.0, -1))67 return 1;68 if (test__fixxfti(-1.5, -1))69 return 1;70 if (test__fixxfti(-1.99, -1))71 return 1;72 if (test__fixxfti(-2.0, -2))73 return 1;74 if (test__fixxfti(-2.01, -2))75 return 1;76 77 if (test__fixxfti(0x1.FFFFFEp+62, 0x7FFFFF8000000000LL))78 return 1;79 if (test__fixxfti(0x1.FFFFFCp+62, 0x7FFFFF0000000000LL))80 return 1;81 82 if (test__fixxfti(-0x1.FFFFFEp+62, make_ti(0xFFFFFFFFFFFFFFFFLL,83 0x8000008000000000LL)))84 return 1;85 if (test__fixxfti(-0x1.FFFFFCp+62, make_ti(0xFFFFFFFFFFFFFFFFLL,86 0x8000010000000000LL)))87 return 1;88 89 if (test__fixxfti(0x1.FFFFFFFFFFFFFp+62, 0x7FFFFFFFFFFFFC00LL))90 return 1;91 if (test__fixxfti(0x1.FFFFFFFFFFFFEp+62, 0x7FFFFFFFFFFFF800LL))92 return 1;93 94 if (test__fixxfti(-0x1.FFFFFFFFFFFFFp+62, make_ti(0xFFFFFFFFFFFFFFFFLL,95 0x8000000000000400LL)))96 return 1;97 if (test__fixxfti(-0x1.FFFFFFFFFFFFEp+62, make_ti(0xFFFFFFFFFFFFFFFFLL,98 0x8000000000000800LL)))99 return 1;100 101 if (test__fixxfti(0x1.FFFFFFFFFFFFFFFCp+62L, 0x7FFFFFFFFFFFFFFFLL))102 return 1;103 if (test__fixxfti(0x1.FFFFFFFFFFFFFFF8p+62L, 0x7FFFFFFFFFFFFFFELL))104 return 1;105 106 if (test__fixxfti(-0x1.0000000000000000p+63L, make_ti(0xFFFFFFFFFFFFFFFFLL,107 0x8000000000000000LL)))108 return 1;109 if (test__fixxfti(-0x1.FFFFFFFFFFFFFFFCp+62L, make_ti(0xFFFFFFFFFFFFFFFFLL,110 0x8000000000000001LL)))111 return 1;112 if (test__fixxfti(-0x1.FFFFFFFFFFFFFFF8p+62L, make_ti(0xFFFFFFFFFFFFFFFFLL,113 0x8000000000000002LL)))114 return 1;115 116 if (test__fixxfti(0x1.FFFFFFFFFFFFFFFEp+126L, make_ti(0x7FFFFFFFFFFFFFFFLL,117 0x8000000000000000LL)))118 return 1;119 if (test__fixxfti(0x1.FFFFFFFFFFFFFFFCp+126L, make_ti(0x7FFFFFFFFFFFFFFFLL,120 0x0000000000000000LL)))121 122 return 1;123 124 if (test__fixxfti(-0x1.0000000000000000p+127L, make_ti(0x8000000000000000LL,125 0x0000000000000000LL)))126 return 1;127 if (test__fixxfti(-0x1.FFFFFFFFFFFFFFFEp+126L, make_ti(0x8000000000000000LL,128 0x8000000000000000LL)))129 return 1;130 if (test__fixxfti(-0x1.FFFFFFFFFFFFFFFCp+126L, make_ti(0x8000000000000001LL,131 0x0000000000000000LL)))132 return 1;133#else134 printf("skipped\n");135#endif136 return 0;137}138