105 lines · c
1// RUN: %clang_builtins %s %librt -o %t && %run %t2// REQUIRES: librt_has_truncsfhf23 4#include <stdio.h>5 6#include "fp_test.h"7 8TYPE_FP16 __truncsfhf2(float a);9 10int test__truncsfhf2(float a, uint16_t expected)11{12 TYPE_FP16 x = __truncsfhf2(a);13 int ret = compareResultH(x, expected);14 15 if (ret){16 printf("error in test__truncsfhf2(%f) = %#.4x, "17 "expected %#.4x\n", a, toRep16(x), expected);18 }19 return ret;20}21 22char assumption_1[sizeof(TYPE_FP16) * CHAR_BIT == 16] = {0};23 24int main()25{26 // qNaN27 if (test__truncsfhf2(makeQNaN32(),28 UINT16_C(0x7e00)))29 return 1;30 // NaN31 if (test__truncsfhf2(makeNaN32(UINT32_C(0x8000)),32 UINT16_C(0x7e00)))33 return 1;34 // inf35 if (test__truncsfhf2(makeInf32(),36 UINT16_C(0x7c00)))37 return 1;38 if (test__truncsfhf2(-makeInf32(),39 UINT16_C(0xfc00)))40 return 1;41 // zero42 if (test__truncsfhf2(0.0f, UINT16_C(0x0)))43 return 1;44 if (test__truncsfhf2(-0.0f, UINT16_C(0x8000)))45 return 1;46 47 if (test__truncsfhf2(3.1415926535f,48 UINT16_C(0x4248)))49 return 1;50 if (test__truncsfhf2(-3.1415926535f,51 UINT16_C(0xc248)))52 return 1;53 if (test__truncsfhf2(0x1.987124876876324p+100f,54 UINT16_C(0x7c00)))55 return 1;56 if (test__truncsfhf2(0x1.987124876876324p+12f,57 UINT16_C(0x6e62)))58 return 1;59 if (test__truncsfhf2(0x1.0p+0f,60 UINT16_C(0x3c00)))61 return 1;62 if (test__truncsfhf2(0x1.0p-14f,63 UINT16_C(0x0400)))64 return 1;65 // denormal66 if (test__truncsfhf2(0x1.0p-20f,67 UINT16_C(0x0010)))68 return 1;69 if (test__truncsfhf2(0x1.0p-24f,70 UINT16_C(0x0001)))71 return 1;72 if (test__truncsfhf2(-0x1.0p-24f,73 UINT16_C(0x8001)))74 return 1;75 if (test__truncsfhf2(0x1.5p-25f,76 UINT16_C(0x0001)))77 return 1;78 // and back to zero79 if (test__truncsfhf2(0x1.0p-25f,80 UINT16_C(0x0000)))81 return 1;82 if (test__truncsfhf2(-0x1.0p-25f,83 UINT16_C(0x8000)))84 return 1;85 // max (precise)86 if (test__truncsfhf2(65504.0f,87 UINT16_C(0x7bff)))88 return 1;89 // max (rounded)90 if (test__truncsfhf2(65519.0f,91 UINT16_C(0x7bff)))92 return 1;93 // max (to +inf)94 if (test__truncsfhf2(65520.0f,95 UINT16_C(0x7c00)))96 return 1;97 if (test__truncsfhf2(65536.0f,98 UINT16_C(0x7c00)))99 return 1;100 if (test__truncsfhf2(-65520.0f,101 UINT16_C(0xfc00)))102 return 1;103 return 0;104}105