78 lines · c
1// RUN: %clang_builtins %s %librt -o %t && %run %t2// REQUIRES: librt_has_fixsfdi3 4#include "int_lib.h"5#include <stdio.h>6 7// Returns: convert a to a signed long long, rounding toward zero.8 9// Assumption: float is a IEEE 32 bit floating point type 10// su_int is a 32 bit integral type11// value in float is representable in di_int (no range checking performed)12 13// seee eeee emmm mmmm mmmm mmmm mmmm mmmm14 15COMPILER_RT_ABI di_int __fixsfdi(float a);16 17int test__fixsfdi(float a, di_int expected)18{19 di_int x = __fixsfdi(a);20 if (x != expected)21 printf("error in __fixsfdi(%A) = %llX, expected %llX\n", a, x, expected);22 return x != expected;23}24 25char assumption_1[sizeof(di_int) == 2*sizeof(si_int)] = {0};26char assumption_2[sizeof(su_int)*CHAR_BIT == 32] = {0};27char assumption_3[sizeof(float)*CHAR_BIT == 32] = {0};28 29int main()30{31 if (test__fixsfdi(0.0F, 0))32 return 1;33 34 if (test__fixsfdi(0.5F, 0))35 return 1;36 if (test__fixsfdi(0.99F, 0))37 return 1;38 if (test__fixsfdi(1.0F, 1))39 return 1;40 if (test__fixsfdi(1.5F, 1))41 return 1;42 if (test__fixsfdi(1.99F, 1))43 return 1;44 if (test__fixsfdi(2.0F, 2))45 return 1;46 if (test__fixsfdi(2.01F, 2))47 return 1;48 if (test__fixsfdi(-0.5F, 0))49 return 1;50 if (test__fixsfdi(-0.99F, 0))51 return 1;52 if (test__fixsfdi(-1.0F, -1))53 return 1;54 if (test__fixsfdi(-1.5F, -1))55 return 1;56 if (test__fixsfdi(-1.99F, -1))57 return 1;58 if (test__fixsfdi(-2.0F, -2))59 return 1;60 if (test__fixsfdi(-2.01F, -2))61 return 1;62 63 if (test__fixsfdi(0x1.FFFFFEp+62F, 0x7FFFFF8000000000LL))64 return 1;65 if (test__fixsfdi(0x1.FFFFFCp+62F, 0x7FFFFF0000000000LL))66 return 1;67 68 if (test__fixsfdi(-0x1.FFFFFEp+62F, 0x8000008000000000LL))69 return 1;70 if (test__fixsfdi(-0x1.FFFFFCp+62F, 0x8000010000000000LL))71 return 1;72 73 if (test__fixsfdi(-0x8000000000000000.0p+0F, 0x8000000000000000LL))74 return 1;75 76 return 0;77}78