96 lines · c
1// RUN: %clang_builtins %s %librt -o %t && %run %t2// REQUIRES: librt_has_fixunsxfsi3 4#include "int_lib.h"5#include <stdio.h>6 7#if HAS_80_BIT_LONG_DOUBLE8// Returns: convert a to a unsigned int, rounding toward zero.9// Negative values all become 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 su_int or is negative 14// (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 su_int __fixunsxfsi(long double a);20 21int test__fixunsxfsi(long double a, su_int expected)22{23 su_int x = __fixunsxfsi(a);24 if (x != expected)25 printf("error in __fixunsxfsi(%LA) = %X, expected %X\n", a, x, expected);26 return x != expected;27}28 29char assumption_2[sizeof(su_int)*CHAR_BIT == 32] = {0};30char assumption_3[sizeof(long double)*CHAR_BIT == 128] = {0};31#endif32 33int main()34{35#if HAS_80_BIT_LONG_DOUBLE36 if (test__fixunsxfsi(0.0, 0))37 return 1;38 39 if (test__fixunsxfsi(0.5, 0))40 return 1;41 if (test__fixunsxfsi(0.99, 0))42 return 1;43 if (test__fixunsxfsi(1.0, 1))44 return 1;45 if (test__fixunsxfsi(1.5, 1))46 return 1;47 if (test__fixunsxfsi(1.99, 1))48 return 1;49 if (test__fixunsxfsi(2.0, 2))50 return 1;51 if (test__fixunsxfsi(2.01, 2))52 return 1;53 if (test__fixunsxfsi(-0.5, 0))54 return 1;55 if (test__fixunsxfsi(-0.99, 0))56 return 1;57#if !TARGET_LIBGCC58 if (test__fixunsxfsi(-1.0, 0)) // libgcc ignores "returns 0 for negative input" spec59 return 1;60 if (test__fixunsxfsi(-1.5, 0))61 return 1;62 if (test__fixunsxfsi(-1.99, 0))63 return 1;64 if (test__fixunsxfsi(-2.0, 0))65 return 1;66 if (test__fixunsxfsi(-2.01, 0))67 return 1;68#endif69 70 if (test__fixunsxfsi(0x1.000000p+31, 0x80000000))71 return 1;72 if (test__fixunsxfsi(0x1.FFFFFEp+31, 0xFFFFFF00))73 return 1;74 if (test__fixunsxfsi(0x1.FFFFFEp+30, 0x7FFFFF80))75 return 1;76 if (test__fixunsxfsi(0x1.FFFFFCp+30, 0x7FFFFF00))77 return 1;78 79#if !TARGET_LIBGCC80 if (test__fixunsxfsi(-0x1.FFFFFEp+30, 0))81 return 1;82 if (test__fixunsxfsi(-0x1.FFFFFCp+30, 0))83 return 1;84#endif85 86 if (test__fixunsxfsi(0x1.FFFFFFFEp+31, 0xFFFFFFFF))87 return 1;88 if (test__fixunsxfsi(0x1.FFFFFFFC00000p+30, 0x7FFFFFFF))89 return 1;90 if (test__fixunsxfsi(0x1.FFFFFFF800000p+30, 0x7FFFFFFE))91 return 1;92 93#endif94 return 0;95}96