forked from OSchip/llvm-project
94 lines
2.6 KiB
C
94 lines
2.6 KiB
C
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//===-- fixunssfsi_test.c - Test __fixunssfsi -----------------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file tests __fixunssfsi 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: float is a IEEE 32 bit floating point type
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// su_int is a 32 bit integral type
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// value in float is representable in su_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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su_int __fixunssfsi(float a);
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int test__fixunssfsi(float a, su_int expected)
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{
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su_int x = __fixunssfsi(a);
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if (x != expected)
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printf("error in __fixunssfsi(%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(float)*CHAR_BIT == 32] = {0};
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int main()
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{
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if (test__fixunssfsi(0.0F, 0))
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return 1;
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if (test__fixunssfsi(0.5F, 0))
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return 1;
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if (test__fixunssfsi(0.99F, 0))
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return 1;
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if (test__fixunssfsi(1.0F, 1))
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return 1;
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if (test__fixunssfsi(1.5F, 1))
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return 1;
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if (test__fixunssfsi(1.99F, 1))
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return 1;
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if (test__fixunssfsi(2.0F, 2))
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return 1;
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if (test__fixunssfsi(2.01F, 2))
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return 1;
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if (test__fixunssfsi(-0.5F, 0))
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return 1;
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if (test__fixunssfsi(-0.99F, 0))
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return 1;
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#if !TARGET_LIBGCC
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if (test__fixunssfsi(-1.0F, 0)) // libgcc ignores "returns 0 for negative input" spec
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return 1;
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if (test__fixunssfsi(-1.5F, 0))
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return 1;
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if (test__fixunssfsi(-1.99F, 0))
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return 1;
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if (test__fixunssfsi(-2.0F, 0))
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return 1;
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if (test__fixunssfsi(-2.01F, 0))
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return 1;
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#endif
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if (test__fixunssfsi(0x1.000000p+31F, 0x80000000))
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return 1;
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if (test__fixunssfsi(0x1.FFFFFEp+31F, 0xFFFFFF00))
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return 1;
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if (test__fixunssfsi(0x1.FFFFFEp+30F, 0x7FFFFF80))
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return 1;
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if (test__fixunssfsi(0x1.FFFFFCp+30F, 0x7FFFFF00))
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return 1;
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#if !TARGET_LIBGCC
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if (test__fixunssfsi(-0x1.FFFFFEp+30F, 0))
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return 1;
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if (test__fixunssfsi(-0x1.FFFFFCp+30F, 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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