forked from OSchip/llvm-project
96 lines
2.8 KiB
C
96 lines
2.8 KiB
C
//===-- fixunssfdi_test.c - Test __fixunssfdi -----------------------------===//
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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 __fixunssfdi 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: float is a IEEE 32 bit floating point type
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// du_int is a 64 bit integral type
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// value in float is representable in du_int or is negative
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// (no range checking performed)
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// seee eeee emmm mmmm mmmm mmmm mmmm mmmm
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du_int __fixunssfdi(float a);
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int test__fixunssfdi(float a, du_int expected)
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{
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du_int x = __fixunssfdi(a);
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if (x != expected)
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printf("error in __fixunssfdi(%A) = %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(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(float)*CHAR_BIT == 32] = {0};
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int main()
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{
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if (test__fixunssfdi(0.0F, 0))
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return 1;
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if (test__fixunssfdi(0.5F, 0))
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return 1;
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if (test__fixunssfdi(0.99F, 0))
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return 1;
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if (test__fixunssfdi(1.0F, 1))
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return 1;
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if (test__fixunssfdi(1.5F, 1))
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return 1;
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if (test__fixunssfdi(1.99F, 1))
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return 1;
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if (test__fixunssfdi(2.0F, 2))
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return 1;
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if (test__fixunssfdi(2.01F, 2))
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return 1;
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if (test__fixunssfdi(-0.5F, 0))
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return 1;
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if (test__fixunssfdi(-0.99F, 0))
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return 1;
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#if !TARGET_LIBGCC
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if (test__fixunssfdi(-1.0F, 0)) // libgcc ignores "returns 0 for negative input" spec
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return 1;
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if (test__fixunssfdi(-1.5F, 0))
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return 1;
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if (test__fixunssfdi(-1.99F, 0))
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return 1;
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if (test__fixunssfdi(-2.0F, 0))
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return 1;
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if (test__fixunssfdi(-2.01F, 0))
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return 1;
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#endif
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if (test__fixunssfdi(0x1.FFFFFEp+63F, 0xFFFFFF0000000000LL))
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return 1;
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if (test__fixunssfdi(0x1.000000p+63F, 0x8000000000000000LL))
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return 1;
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if (test__fixunssfdi(0x1.FFFFFEp+62F, 0x7FFFFF8000000000LL))
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return 1;
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if (test__fixunssfdi(0x1.FFFFFCp+62F, 0x7FFFFF0000000000LL))
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return 1;
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#if !TARGET_LIBGCC
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if (test__fixunssfdi(-0x1.FFFFFEp+62F, 0x0000000000000000LL))
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return 1;
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if (test__fixunssfdi(-0x1.FFFFFCp+62F, 0x0000000000000000LL))
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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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