forked from OSchip/llvm-project
104 lines
3.0 KiB
C
104 lines
3.0 KiB
C
// RUN: %clang_builtins %s %librt -o %t && %run %t
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//===-- fixunsdfsi_test.c - Test __fixunsdfsi -----------------------------===//
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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 __fixunsdfsi 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 int, 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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// su_int is a 32 bit integral type
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// value in double is representable in su_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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COMPILER_RT_ABI su_int __fixunsdfsi(double a);
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int test__fixunsdfsi(double a, su_int expected)
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{
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su_int x = __fixunsdfsi(a);
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if (x != expected)
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printf("error in __fixunsdfsi(%A) = %X, expected %X\n", a, x, expected);
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return x != expected;
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}
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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__fixunsdfsi(0.0, 0))
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return 1;
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if (test__fixunsdfsi(0.5, 0))
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return 1;
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if (test__fixunsdfsi(0.99, 0))
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return 1;
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if (test__fixunsdfsi(1.0, 1))
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return 1;
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if (test__fixunsdfsi(1.5, 1))
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return 1;
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if (test__fixunsdfsi(1.99, 1))
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return 1;
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if (test__fixunsdfsi(2.0, 2))
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return 1;
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if (test__fixunsdfsi(2.01, 2))
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return 1;
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if (test__fixunsdfsi(-0.5, 0))
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return 1;
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if (test__fixunsdfsi(-0.99, 0))
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return 1;
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#if !TARGET_LIBGCC
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if (test__fixunsdfsi(-1.0, 0)) // libgcc ignores "returns 0 for negative input" spec
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return 1;
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if (test__fixunsdfsi(-1.5, 0))
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return 1;
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if (test__fixunsdfsi(-1.99, 0))
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return 1;
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if (test__fixunsdfsi(-2.0, 0))
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return 1;
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if (test__fixunsdfsi(-2.01, 0))
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return 1;
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#endif
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if (test__fixunsdfsi(0x1.000000p+31, 0x80000000))
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return 1;
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if (test__fixunsdfsi(0x1.000000p+32, 0xFFFFFFFF))
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return 1;
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if (test__fixunsdfsi(0x1.FFFFFEp+31, 0xFFFFFF00))
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return 1;
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if (test__fixunsdfsi(0x1.FFFFFEp+30, 0x7FFFFF80))
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return 1;
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if (test__fixunsdfsi(0x1.FFFFFCp+30, 0x7FFFFF00))
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return 1;
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#if !TARGET_LIBGCC
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if (test__fixunsdfsi(-0x1.FFFFFEp+30, 0))
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return 1;
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if (test__fixunsdfsi(-0x1.FFFFFCp+30, 0))
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return 1;
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#endif
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if (test__fixunsdfsi(0x1.FFFFFFFEp+31, 0xFFFFFFFF))
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return 1;
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if (test__fixunsdfsi(0x1.FFFFFFFC00000p+30, 0x7FFFFFFF))
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return 1;
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if (test__fixunsdfsi(0x1.FFFFFFF800000p+30, 0x7FFFFFFE))
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return 1;
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return 0;
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}
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