forked from OSchip/llvm-project
116 lines
3.4 KiB
C
116 lines
3.4 KiB
C
//===-- fixxfdi_test.c - Test __fixxfdi -----------------------------------===//
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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 __fixxfdi 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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#if HAS_80_BIT_LONG_DOUBLE
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// Returns: convert a to a signed long long, rounding toward zero.
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// Assumption: long double is an intel 80 bit floating point type padded with 6 bytes
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// su_int is a 32 bit integral type
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// value in long double is representable in di_int (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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COMPILER_RT_ABI di_int __sfixxfdi(long double a);
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int test__fixxfdi(long double a, di_int expected)
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{
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di_int x = __fixxfdi(a);
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if (x != expected)
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printf("error in __fixxfdi(%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(di_int) == 2*sizeof(si_int)] = {0};
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char assumption_2[sizeof(su_int)*CHAR_BIT == 32] = {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__fixxfdi(0.0, 0))
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return 1;
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if (test__fixxfdi(0.5, 0))
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return 1;
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if (test__fixxfdi(0.99, 0))
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return 1;
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if (test__fixxfdi(1.0, 1))
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return 1;
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if (test__fixxfdi(1.5, 1))
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return 1;
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if (test__fixxfdi(1.99, 1))
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return 1;
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if (test__fixxfdi(2.0, 2))
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return 1;
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if (test__fixxfdi(2.01, 2))
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return 1;
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if (test__fixxfdi(-0.5, 0))
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return 1;
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if (test__fixxfdi(-0.99, 0))
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return 1;
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if (test__fixxfdi(-1.0, -1))
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return 1;
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if (test__fixxfdi(-1.5, -1))
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return 1;
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if (test__fixxfdi(-1.99, -1))
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return 1;
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if (test__fixxfdi(-2.0, -2))
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return 1;
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if (test__fixxfdi(-2.01, -2))
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return 1;
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if (test__fixxfdi(0x1.FFFFFEp+62, 0x7FFFFF8000000000LL))
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return 1;
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if (test__fixxfdi(0x1.FFFFFCp+62, 0x7FFFFF0000000000LL))
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return 1;
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if (test__fixxfdi(-0x1.FFFFFEp+62, 0x8000008000000000LL))
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return 1;
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if (test__fixxfdi(-0x1.FFFFFCp+62, 0x8000010000000000LL))
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return 1;
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if (test__fixxfdi(0x1.FFFFFFFFFFFFFp+62, 0x7FFFFFFFFFFFFC00LL))
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return 1;
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if (test__fixxfdi(0x1.FFFFFFFFFFFFEp+62, 0x7FFFFFFFFFFFF800LL))
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return 1;
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if (test__fixxfdi(-0x1.FFFFFFFFFFFFFp+62, 0x8000000000000400LL))
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return 1;
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if (test__fixxfdi(-0x1.FFFFFFFFFFFFEp+62, 0x8000000000000800LL))
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return 1;
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if (test__fixxfdi(0x1.FFFFFFFFFFFFFFFCp+62L, 0x7FFFFFFFFFFFFFFFLL))
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return 1;
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if (test__fixxfdi(0x1.FFFFFFFFFFFFFFF8p+62L, 0x7FFFFFFFFFFFFFFELL))
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return 1;
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if (test__fixxfdi(-0x1.0000000000000000p+63L, 0x8000000000000000LL))
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return 1;
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if (test__fixxfdi(-0x1.FFFFFFFFFFFFFFFCp+62L, 0x8000000000000001LL))
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return 1;
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if (test__fixxfdi(-0x1.FFFFFFFFFFFFFFF8p+62L, 0x8000000000000002LL))
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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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