forked from OSchip/llvm-project
123 lines
3.7 KiB
C
123 lines
3.7 KiB
C
//===-- fixunsxfdi_test.c - Test __fixunsxfdi -----------------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is dual licensed under the MIT and the University of Illinois Open
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// Source Licenses. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file tests __fixunsxfdi for the compiler_rt library.
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//
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//===----------------------------------------------------------------------===//
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#include "int_lib.h"
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#include <stdio.h>
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#include <limits.h>
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#if HAS_80_BIT_LONG_DOUBLE
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// Returns: convert a to a unsigned long long, rounding toward zero.
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// Negative values all become zero.
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// Assumption: long double is an intel 80 bit floating point type padded with 6 bytes
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// du_int is a 64 bit integral type
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// value in long double is representable in du_int or is negative
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// (no range checking performed)
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// gggg gggg gggg gggg gggg gggg gggg gggg | gggg gggg gggg gggg seee eeee eeee eeee |
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// 1mmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm | mmmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm
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du_int __fixunsxfdi(long double a);
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int test__fixunsxfdi(long double a, du_int expected)
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{
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du_int x = __fixunsxfdi(a);
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if (x != expected)
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printf("error in __fixunsxfdi(%LA) = %llX, expected %llX\n",
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a, x, expected);
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return x != expected;
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}
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char assumption_1[sizeof(du_int) == 2*sizeof(su_int)] = {0};
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char assumption_2[sizeof(du_int)*CHAR_BIT == 64] = {0};
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char assumption_3[sizeof(long double)*CHAR_BIT == 128] = {0};
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#endif
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int main()
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{
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#if HAS_80_BIT_LONG_DOUBLE
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if (test__fixunsxfdi(0.0, 0))
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return 1;
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if (test__fixunsxfdi(0.5, 0))
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return 1;
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if (test__fixunsxfdi(0.99, 0))
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return 1;
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if (test__fixunsxfdi(1.0, 1))
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return 1;
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if (test__fixunsxfdi(1.5, 1))
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return 1;
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if (test__fixunsxfdi(1.99, 1))
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return 1;
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if (test__fixunsxfdi(2.0, 2))
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return 1;
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if (test__fixunsxfdi(2.01, 2))
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return 1;
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if (test__fixunsxfdi(-0.5, 0))
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return 1;
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if (test__fixunsxfdi(-0.99, 0))
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return 1;
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if (test__fixunsxfdi(-1.0, 0))
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return 1;
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if (test__fixunsxfdi(-1.5, 0))
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return 1;
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if (test__fixunsxfdi(-1.99, 0))
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return 1;
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if (test__fixunsxfdi(-2.0, 0))
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return 1;
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if (test__fixunsxfdi(-2.01, 0))
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return 1;
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if (test__fixunsxfdi(0x1.FFFFFEp+62, 0x7FFFFF8000000000LL))
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return 1;
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if (test__fixunsxfdi(0x1.FFFFFCp+62, 0x7FFFFF0000000000LL))
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return 1;
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if (test__fixunsxfdi(-0x1.FFFFFEp+62, 0))
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return 1;
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if (test__fixunsxfdi(-0x1.FFFFFCp+62, 0))
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return 1;
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if (test__fixunsxfdi(0x1.FFFFFFFFFFFFFp+62, 0x7FFFFFFFFFFFFC00LL))
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return 1;
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if (test__fixunsxfdi(0x1.FFFFFFFFFFFFEp+62, 0x7FFFFFFFFFFFF800LL))
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return 1;
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if (test__fixunsxfdi(-0x1.FFFFFFFFFFFFFp+62, 0))
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return 1;
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if (test__fixunsxfdi(-0x1.FFFFFFFFFFFFEp+62, 0))
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return 1;
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if (test__fixunsxfdi(0x1.FFFFFFFFFFFFFFFEp+63L, 0xFFFFFFFFFFFFFFFFLL))
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return 1;
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if (test__fixunsxfdi(0x1.0000000000000002p+63L, 0x8000000000000001LL))
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return 1;
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if (test__fixunsxfdi(0x1.0000000000000000p+63L, 0x8000000000000000LL))
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return 1;
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if (test__fixunsxfdi(0x1.FFFFFFFFFFFFFFFCp+62L, 0x7FFFFFFFFFFFFFFFLL))
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return 1;
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if (test__fixunsxfdi(0x1.FFFFFFFFFFFFFFF8p+62L, 0x7FFFFFFFFFFFFFFELL))
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return 1;
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if (test__fixunsxfdi(-0x1.0000000000000000p+63L, 0))
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return 1;
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if (test__fixunsxfdi(-0x1.FFFFFFFFFFFFFFFCp+62L, 0))
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return 1;
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if (test__fixunsxfdi(-0x1.FFFFFFFFFFFFFFF8p+62L, 0))
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return 1;
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#endif
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return 0;
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}
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