110 lines
3.1 KiB
C
110 lines
3.1 KiB
C
//===-- fixsfti_test.c - Test __fixsfti -----------------------------------===//
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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 __fixsfti 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: 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 ti_int (no range checking performed)
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// seee eeee emmm mmmm mmmm mmmm mmmm mmmm
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ti_int __fixsfti(float a);
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int test__fixsfti(float a, ti_int expected)
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{
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ti_int x = __fixsfti(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 __fixsfti(%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(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__fixsfti(0.0F, 0))
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return 1;
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if (test__fixsfti(0.5F, 0))
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return 1;
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if (test__fixsfti(0.99F, 0))
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return 1;
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if (test__fixsfti(1.0F, 1))
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return 1;
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if (test__fixsfti(1.5F, 1))
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return 1;
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if (test__fixsfti(1.99F, 1))
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return 1;
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if (test__fixsfti(2.0F, 2))
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return 1;
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if (test__fixsfti(2.01F, 2))
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return 1;
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if (test__fixsfti(-0.5F, 0))
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return 1;
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if (test__fixsfti(-0.99F, 0))
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return 1;
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if (test__fixsfti(-1.0F, -1))
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return 1;
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if (test__fixsfti(-1.5F, -1))
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return 1;
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if (test__fixsfti(-1.99F, -1))
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return 1;
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if (test__fixsfti(-2.0F, -2))
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return 1;
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if (test__fixsfti(-2.01F, -2))
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return 1;
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if (test__fixsfti(0x1.FFFFFEp+62F, 0x7FFFFF8000000000LL))
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return 1;
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if (test__fixsfti(0x1.FFFFFCp+62F, 0x7FFFFF0000000000LL))
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return 1;
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if (test__fixsfti(-0x1.FFFFFEp+62F, make_ti(0xFFFFFFFFFFFFFFFFLL,
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0x8000008000000000LL)))
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return 1;
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if (test__fixsfti(-0x1.FFFFFCp+62F, make_ti(0xFFFFFFFFFFFFFFFFLL,
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0x8000010000000000LL)))
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return 1;
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if (test__fixsfti(0x1.FFFFFEp+126F, make_ti(0x7FFFFF8000000000LL, 0)))
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return 1;
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if (test__fixsfti(0x1.FFFFFCp+126F, make_ti(0x7FFFFF0000000000LL, 0)))
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return 1;
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if (test__fixsfti(-0x1.FFFFFEp+126F, make_ti(0x8000008000000000LL, 0)))
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return 1;
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if (test__fixsfti(-0x1.FFFFFCp+126F, make_ti(0x8000010000000000LL, 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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