112 lines · c
1// RUN: %clang_builtins %s %librt -o %t && %run %t2// REQUIRES: librt_has_fixunssfti3// REQUIRES: int1284 5#include "int_lib.h"6#include <stdio.h>7 8#ifdef CRT_HAS_128BIT9 10// Returns: convert a to a unsigned long long, rounding toward zero.11// Negative values all become zero.12 13// Assumption: float is a IEEE 32 bit floating point type 14// tu_int is a 64 bit integral type15// value in float is representable in tu_int or is negative 16// (no range checking performed)17 18// seee eeee emmm mmmm mmmm mmmm mmmm mmmm19 20COMPILER_RT_ABI tu_int __fixunssfti(float a);21 22int test__fixunssfti(float a, tu_int expected)23{24 tu_int x = __fixunssfti(a);25 if (x != expected)26 {27 utwords xt;28 xt.all = x;29 utwords expectedt;30 expectedt.all = expected;31 printf("error in __fixunssfti(%A) = 0x%.16llX%.16llX, expected 0x%.16llX%.16llX\n",32 a, xt.s.high, xt.s.low, expectedt.s.high, expectedt.s.low);33 }34 return x != expected;35}36 37char assumption_1[sizeof(tu_int) == 2*sizeof(di_int)] = {0};38char assumption_2[sizeof(su_int)*CHAR_BIT == 32] = {0};39char assumption_3[sizeof(float)*CHAR_BIT == 32] = {0};40 41#endif42 43int main()44{45#ifdef CRT_HAS_128BIT46 if (test__fixunssfti(0.0F, 0))47 return 1;48 49 if (test__fixunssfti(0.5F, 0))50 return 1;51 if (test__fixunssfti(0.99F, 0))52 return 1;53 if (test__fixunssfti(1.0F, 1))54 return 1;55 if (test__fixunssfti(1.5F, 1))56 return 1;57 if (test__fixunssfti(1.99F, 1))58 return 1;59 if (test__fixunssfti(2.0F, 2))60 return 1;61 if (test__fixunssfti(2.01F, 2))62 return 1;63 if (test__fixunssfti(-0.5F, 0))64 return 1;65 if (test__fixunssfti(-0.99F, 0))66 return 1;67#if !TARGET_LIBGCC68 if (test__fixunssfti(-1.0F, 0)) // libgcc ignores "returns 0 for negative input" spec69 return 1;70 if (test__fixunssfti(-1.5F, 0))71 return 1;72 if (test__fixunssfti(-1.99F, 0))73 return 1;74 if (test__fixunssfti(-2.0F, 0))75 return 1;76 if (test__fixunssfti(-2.01F, 0))77 return 1;78#endif79 80 if (test__fixunssfti(0x1.FFFFFEp+63F, 0xFFFFFF0000000000ULL))81 return 1;82 if (test__fixunssfti(0x1.000000p+63F, 0x8000000000000000ULL))83 return 1;84 if (test__fixunssfti(0x1.FFFFFEp+62F, 0x7FFFFF8000000000LL))85 return 1;86 if (test__fixunssfti(0x1.FFFFFCp+62F, 0x7FFFFF0000000000LL))87 return 1;88 89 if (test__fixunssfti(0x1.FFFFFEp+127F, make_ti(0xFFFFFF0000000000ULL, 0)))90 return 1;91 if (test__fixunssfti(0x1.000000p+127F, make_ti(0x8000000000000000ULL, 0)))92 return 1;93 if (test__fixunssfti(0x1.FFFFFEp+126F, make_ti(0x7FFFFF8000000000LL, 0)))94 return 1;95 if (test__fixunssfti(0x1.FFFFFCp+126F, make_ti(0x7FFFFF0000000000LL, 0)))96 return 1;97 98#if !TARGET_LIBGCC99 if (test__fixunssfti(-0x1.FFFFFEp+62F, 0x0000000000000000LL))100 return 1;101 if (test__fixunssfti(-0x1.FFFFFCp+62F, 0x0000000000000000LL))102 return 1;103 if (test__fixunssfti(-0x1.FFFFFEp+126F, 0x0000000000000000LL))104 return 1;105 if (test__fixunssfti(-0x1.FFFFFCp+126F, 0x0000000000000000LL))106 return 1;107#endif108 109#endif110 return 0;111}112