156 lines
5.1 KiB
C
156 lines
5.1 KiB
C
// RUN: %clang_builtins %s %librt -o %t && %run %t
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// REQUIRES: librt_has_floatuntisf
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#include "int_lib.h"
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#include <float.h>
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#include <stdio.h>
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#if defined(CRT_HAS_128BIT) && HAS_80_BIT_LONG_DOUBLE
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// Returns: convert a to a float, rounding toward even.
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// Assumption: float is a IEEE 32 bit floating point type
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// tu_int is a 128 bit integral type
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// seee eeee emmm mmmm mmmm mmmm mmmm mmmm
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COMPILER_RT_ABI float __floatuntisf(tu_int a);
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int test__floatuntisf(tu_int a, float expected)
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{
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float x = __floatuntisf(a);
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if (x != expected)
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{
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utwords at;
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at.all = a;
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printf("error in __floatuntisf(0x%.16llX%.16llX) = %a, expected %a\n",
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at.s.high, at.s.low, x, expected);
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}
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return x != expected;
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}
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COMPILE_TIME_ASSERT(sizeof(tu_int) == 2*sizeof(du_int));
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COMPILE_TIME_ASSERT(sizeof(tu_int)*CHAR_BIT == 128);
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COMPILE_TIME_ASSERT(sizeof(float)*CHAR_BIT == 32);
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#endif
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int main()
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{
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#if defined(CRT_HAS_128BIT) && HAS_80_BIT_LONG_DOUBLE
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if (test__floatuntisf(0, 0.0F))
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return 1;
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if (test__floatuntisf(1, 1.0F))
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return 1;
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if (test__floatuntisf(2, 2.0F))
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return 1;
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if (test__floatuntisf(20, 20.0F))
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return 1;
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if (test__floatuntisf(0x7FFFFF8000000000LL, 0x1.FFFFFEp+62F))
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return 1;
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if (test__floatuntisf(0x7FFFFF0000000000LL, 0x1.FFFFFCp+62F))
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return 1;
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if (test__floatuntisf(make_ti(0x8000008000000000LL, 0), 0x1.000001p+127F))
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return 1;
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if (test__floatuntisf(make_ti(0x8000000000000800LL, 0), 0x1.0p+127F))
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return 1;
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if (test__floatuntisf(make_ti(0x8000010000000000LL, 0), 0x1.000002p+127F))
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return 1;
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if (test__floatuntisf(make_ti(0x8000000000000000LL, 0), 0x1.000000p+127F))
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return 1;
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if (test__floatuntisf(0x0007FB72E8000000LL, 0x1.FEDCBAp+50F))
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return 1;
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if (test__floatuntisf(0x0007FB72EA000000LL, 0x1.FEDCBA8p+50F))
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return 1;
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if (test__floatuntisf(0x0007FB72EB000000LL, 0x1.FEDCBACp+50F))
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return 1;
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if (test__floatuntisf(0x0007FB72EC000000LL, 0x1.FEDCBBp+50F))
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return 1;
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if (test__floatuntisf(0x0007FB72E6000000LL, 0x1.FEDCB98p+50F))
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return 1;
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if (test__floatuntisf(0x0007FB72E7000000LL, 0x1.FEDCB9Cp+50F))
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return 1;
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if (test__floatuntisf(0x0007FB72E4000000LL, 0x1.FEDCB9p+50F))
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return 1;
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if (test__floatuntisf(0xFFFFFFFFFFFFFFFELL, 0x1p+64F))
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return 1;
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if (test__floatuntisf(0xFFFFFFFFFFFFFFFFLL, 0x1p+64F))
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return 1;
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if (test__floatuntisf(0x0007FB72E8000000LL, 0x1.FEDCBAp+50F))
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return 1;
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if (test__floatuntisf(0x0007FB72EA000000LL, 0x1.FEDCBAp+50F))
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return 1;
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if (test__floatuntisf(0x0007FB72EB000000LL, 0x1.FEDCBAp+50F))
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return 1;
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if (test__floatuntisf(0x0007FB72EBFFFFFFLL, 0x1.FEDCBAp+50F))
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return 1;
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if (test__floatuntisf(0x0007FB72EC000000LL, 0x1.FEDCBCp+50F))
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return 1;
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if (test__floatuntisf(0x0007FB72E8000001LL, 0x1.FEDCBAp+50F))
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return 1;
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if (test__floatuntisf(0x0007FB72E6000000LL, 0x1.FEDCBAp+50F))
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return 1;
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if (test__floatuntisf(0x0007FB72E7000000LL, 0x1.FEDCBAp+50F))
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return 1;
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if (test__floatuntisf(0x0007FB72E7FFFFFFLL, 0x1.FEDCBAp+50F))
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return 1;
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if (test__floatuntisf(0x0007FB72E4000001LL, 0x1.FEDCBAp+50F))
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return 1;
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if (test__floatuntisf(0x0007FB72E4000000LL, 0x1.FEDCB8p+50F))
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return 1;
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if (test__floatuntisf(make_ti(0x0000000000001FEDLL, 0xCB90000000000001LL),
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0x1.FEDCBAp+76F))
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return 1;
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if (test__floatuntisf(make_ti(0x0000000000001FEDLL, 0xCBA0000000000000LL),
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0x1.FEDCBAp+76F))
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return 1;
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if (test__floatuntisf(make_ti(0x0000000000001FEDLL, 0xCBAFFFFFFFFFFFFFLL),
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0x1.FEDCBAp+76F))
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return 1;
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if (test__floatuntisf(make_ti(0x0000000000001FEDLL, 0xCBB0000000000000LL),
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0x1.FEDCBCp+76F))
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return 1;
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if (test__floatuntisf(make_ti(0x0000000000001FEDLL, 0xCBB0000000000001LL),
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0x1.FEDCBCp+76F))
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return 1;
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if (test__floatuntisf(make_ti(0x0000000000001FEDLL, 0xCBBFFFFFFFFFFFFFLL),
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0x1.FEDCBCp+76F))
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return 1;
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if (test__floatuntisf(make_ti(0x0000000000001FEDLL, 0xCBC0000000000000LL),
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0x1.FEDCBCp+76F))
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return 1;
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if (test__floatuntisf(make_ti(0x0000000000001FEDLL, 0xCBC0000000000001LL),
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0x1.FEDCBCp+76F))
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return 1;
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if (test__floatuntisf(make_ti(0x0000000000001FEDLL, 0xCBD0000000000000LL),
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0x1.FEDCBCp+76F))
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return 1;
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if (test__floatuntisf(make_ti(0x0000000000001FEDLL, 0xCBD0000000000001LL),
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0x1.FEDCBEp+76F))
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return 1;
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if (test__floatuntisf(make_ti(0x0000000000001FEDLL, 0xCBDFFFFFFFFFFFFFLL),
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0x1.FEDCBEp+76F))
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return 1;
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if (test__floatuntisf(make_ti(0x0000000000001FEDLL, 0xCBE0000000000000LL),
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0x1.FEDCBEp+76F))
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return 1;
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#else
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printf("skipped\n");
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#endif
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return 0;
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}
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