forked from OSchip/llvm-project
107 lines
3.1 KiB
C
107 lines
3.1 KiB
C
//===-- fixunsdfdi_test.c - Test __fixunsdfdi -----------------------------===//
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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 __fixunsdfdi 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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// 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: double is a IEEE 64 bit floating point type
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// du_int is a 64 bit integral type
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// value in double is representable in du_int or is negative
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// (no range checking performed)
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// seee eeee eeee mmmm mmmm mmmm mmmm mmmm | mmmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm
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du_int __fixunsdfdi(double a);
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int test__fixunsdfdi(double a, du_int expected)
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{
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du_int x = __fixunsdfdi(a);
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if (x != expected)
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printf("error in __fixunsdfdi(%A) = %llX, expected %llX\n", 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(su_int)*CHAR_BIT == 32] = {0};
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char assumption_3[sizeof(double)*CHAR_BIT == 64] = {0};
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int main()
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{
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if (test__fixunsdfdi(0.0, 0))
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return 1;
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if (test__fixunsdfdi(0.5, 0))
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return 1;
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if (test__fixunsdfdi(0.99, 0))
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return 1;
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if (test__fixunsdfdi(1.0, 1))
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return 1;
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if (test__fixunsdfdi(1.5, 1))
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return 1;
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if (test__fixunsdfdi(1.99, 1))
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return 1;
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if (test__fixunsdfdi(2.0, 2))
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return 1;
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if (test__fixunsdfdi(2.01, 2))
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return 1;
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if (test__fixunsdfdi(-0.5, 0))
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return 1;
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if (test__fixunsdfdi(-0.99, 0))
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return 1;
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#if !TARGET_LIBGCC
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if (test__fixunsdfdi(-1.0, 0)) // libgcc ignores "returns 0 for negative input" spec
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return 1;
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if (test__fixunsdfdi(-1.5, 0))
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return 1;
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if (test__fixunsdfdi(-1.99, 0))
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return 1;
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if (test__fixunsdfdi(-2.0, 0))
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return 1;
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if (test__fixunsdfdi(-2.01, 0))
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return 1;
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#endif
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if (test__fixunsdfdi(0x1.FFFFFEp+62, 0x7FFFFF8000000000LL))
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return 1;
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if (test__fixunsdfdi(0x1.FFFFFCp+62, 0x7FFFFF0000000000LL))
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return 1;
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#if !TARGET_LIBGCC
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if (test__fixunsdfdi(-0x1.FFFFFEp+62, 0))
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return 1;
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if (test__fixunsdfdi(-0x1.FFFFFCp+62, 0))
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return 1;
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#endif
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if (test__fixunsdfdi(0x1.FFFFFFFFFFFFFp+63, 0xFFFFFFFFFFFFF800LL))
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return 1;
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if (test__fixunsdfdi(0x1.0000000000000p+63, 0x8000000000000000LL))
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return 1;
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if (test__fixunsdfdi(0x1.FFFFFFFFFFFFFp+62, 0x7FFFFFFFFFFFFC00LL))
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return 1;
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if (test__fixunsdfdi(0x1.FFFFFFFFFFFFEp+62, 0x7FFFFFFFFFFFF800LL))
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return 1;
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#if !TARGET_LIBGCC
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if (test__fixunsdfdi(-0x1.FFFFFFFFFFFFFp+62, 0))
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return 1;
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if (test__fixunsdfdi(-0x1.FFFFFFFFFFFFEp+62, 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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