forked from OSchip/llvm-project
121 lines
3.5 KiB
C
121 lines
3.5 KiB
C
//===-- fixunssfti_test.c - Test __fixunssfti -----------------------------===//
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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 __fixunssfti for the compiler_rt library.
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//
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//===----------------------------------------------------------------------===//
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#if __x86_64
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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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// tu_int is a 64 bit integral type
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// value in float is representable in tu_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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tu_int __fixunssfti(float a);
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int test__fixunssfti(float a, tu_int expected)
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{
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tu_int x = __fixunssfti(a);
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if (x != expected)
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{
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utwords xt;
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xt.all = x;
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utwords expectedt;
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expectedt.all = expected;
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printf("error in __fixunssfti(%A) = 0x%.16llX%.16llX, expected 0x%.16llX%.16llX\n",
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a, xt.s.high, xt.s.low, expectedt.s.high, expectedt.s.low);
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}
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return x != expected;
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}
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char assumption_1[sizeof(tu_int) == 2*sizeof(di_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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#endif
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int main()
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{
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#if __x86_64
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if (test__fixunssfti(0.0F, 0))
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return 1;
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if (test__fixunssfti(0.5F, 0))
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return 1;
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if (test__fixunssfti(0.99F, 0))
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return 1;
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if (test__fixunssfti(1.0F, 1))
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return 1;
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if (test__fixunssfti(1.5F, 1))
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return 1;
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if (test__fixunssfti(1.99F, 1))
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return 1;
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if (test__fixunssfti(2.0F, 2))
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return 1;
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if (test__fixunssfti(2.01F, 2))
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return 1;
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if (test__fixunssfti(-0.5F, 0))
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return 1;
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if (test__fixunssfti(-0.99F, 0))
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return 1;
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#if !TARGET_LIBGCC
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if (test__fixunssfti(-1.0F, 0)) // libgcc ignores "returns 0 for negative input" spec
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return 1;
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if (test__fixunssfti(-1.5F, 0))
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return 1;
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if (test__fixunssfti(-1.99F, 0))
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return 1;
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if (test__fixunssfti(-2.0F, 0))
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return 1;
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if (test__fixunssfti(-2.01F, 0))
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return 1;
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#endif
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if (test__fixunssfti(0x1.FFFFFEp+63F, 0xFFFFFF0000000000LL))
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return 1;
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if (test__fixunssfti(0x1.000000p+63F, 0x8000000000000000LL))
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return 1;
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if (test__fixunssfti(0x1.FFFFFEp+62F, 0x7FFFFF8000000000LL))
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return 1;
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if (test__fixunssfti(0x1.FFFFFCp+62F, 0x7FFFFF0000000000LL))
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return 1;
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if (test__fixunssfti(0x1.FFFFFEp+127F, make_ti(0xFFFFFF0000000000LL, 0)))
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return 1;
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if (test__fixunssfti(0x1.000000p+127F, make_ti(0x8000000000000000LL, 0)))
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return 1;
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if (test__fixunssfti(0x1.FFFFFEp+126F, make_ti(0x7FFFFF8000000000LL, 0)))
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return 1;
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if (test__fixunssfti(0x1.FFFFFCp+126F, make_ti(0x7FFFFF0000000000LL, 0)))
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return 1;
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#if !TARGET_LIBGCC
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if (test__fixunssfti(-0x1.FFFFFEp+62F, 0x0000000000000000LL))
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return 1;
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if (test__fixunssfti(-0x1.FFFFFCp+62F, 0x0000000000000000LL))
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return 1;
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if (test__fixunssfti(-0x1.FFFFFEp+126F, 0x0000000000000000LL))
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return 1;
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if (test__fixunssfti(-0x1.FFFFFCp+126F, 0x0000000000000000LL))
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return 1;
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#endif
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#endif
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return 0;
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}
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