forked from OSchip/llvm-project
122 lines
3.6 KiB
C
122 lines
3.6 KiB
C
//===-- fixdfti_test.c - Test __fixdfti -----------------------------------===//
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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 __fixdfti 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 signed long long, rounding toward 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 ti_int (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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ti_int __fixdfti(double a);
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int test__fixdfti(double a, ti_int expected)
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{
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ti_int x = __fixdfti(a);
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if (x != expected)
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{
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twords xt;
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xt.all = x;
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twords expectedt;
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expectedt.all = expected;
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printf("error in __fixdfti(%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(ti_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(double)*CHAR_BIT == 64] = {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__fixdfti(0.0, 0))
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return 1;
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if (test__fixdfti(0.5, 0))
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return 1;
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if (test__fixdfti(0.99, 0))
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return 1;
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if (test__fixdfti(1.0, 1))
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return 1;
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if (test__fixdfti(1.5, 1))
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return 1;
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if (test__fixdfti(1.99, 1))
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return 1;
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if (test__fixdfti(2.0, 2))
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return 1;
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if (test__fixdfti(2.01, 2))
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return 1;
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if (test__fixdfti(-0.5, 0))
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return 1;
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if (test__fixdfti(-0.99, 0))
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return 1;
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if (test__fixdfti(-1.0, -1))
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return 1;
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if (test__fixdfti(-1.5, -1))
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return 1;
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if (test__fixdfti(-1.99, -1))
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return 1;
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if (test__fixdfti(-2.0, -2))
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return 1;
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if (test__fixdfti(-2.01, -2))
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return 1;
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if (test__fixdfti(0x1.FFFFFEp+62, 0x7FFFFF8000000000LL))
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return 1;
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if (test__fixdfti(0x1.FFFFFCp+62, 0x7FFFFF0000000000LL))
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return 1;
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if (test__fixdfti(-0x1.FFFFFEp+62, make_ti(0xFFFFFFFFFFFFFFFFLL,
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0x8000008000000000LL)))
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return 1;
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if (test__fixdfti(-0x1.FFFFFCp+62, make_ti(0xFFFFFFFFFFFFFFFFLL,
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0x8000010000000000LL)))
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return 1;
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if (test__fixdfti(0x1.FFFFFFFFFFFFFp+62, 0x7FFFFFFFFFFFFC00LL))
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return 1;
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if (test__fixdfti(0x1.FFFFFFFFFFFFEp+62, 0x7FFFFFFFFFFFF800LL))
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return 1;
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if (test__fixdfti(-0x1.FFFFFFFFFFFFFp+62, make_ti(0xFFFFFFFFFFFFFFFFLL,
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0x8000000000000400LL)))
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return 1;
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if (test__fixdfti(-0x1.FFFFFFFFFFFFEp+62, make_ti(0xFFFFFFFFFFFFFFFFLL,
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0x8000000000000800LL)))
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return 1;
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if (test__fixdfti(0x1.FFFFFFFFFFFFFp+126, make_ti(0x7FFFFFFFFFFFFC00LL, 0)))
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return 1;
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if (test__fixdfti(0x1.FFFFFFFFFFFFEp+126, make_ti(0x7FFFFFFFFFFFF800LL, 0)))
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return 1;
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if (test__fixdfti(-0x1.FFFFFFFFFFFFFp+126, make_ti(0x8000000000000400LL, 0)))
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return 1;
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if (test__fixdfti(-0x1.FFFFFFFFFFFFEp+126, make_ti(0x8000000000000800LL, 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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