derek.holloway
7502bf64a4
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78 lines
2.0 KiB
C
78 lines
2.0 KiB
C
// RUN: %clang_builtins %s %librt -o %t && %run %t
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// REQUIRES: librt_has_fixsfdi
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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 di_int (no range checking performed)
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// seee eeee emmm mmmm mmmm mmmm mmmm mmmm
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COMPILER_RT_ABI di_int __fixsfdi(float a);
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int test__fixsfdi(float a, di_int expected)
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{
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di_int x = __fixsfdi(a);
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if (x != expected)
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printf("error in __fixsfdi(%A) = %llX, expected %llX\n", a, x, expected);
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return x != expected;
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}
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char assumption_1[sizeof(di_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__fixsfdi(0.0F, 0))
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return 1;
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if (test__fixsfdi(0.5F, 0))
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return 1;
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if (test__fixsfdi(0.99F, 0))
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return 1;
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if (test__fixsfdi(1.0F, 1))
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return 1;
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if (test__fixsfdi(1.5F, 1))
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return 1;
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if (test__fixsfdi(1.99F, 1))
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return 1;
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if (test__fixsfdi(2.0F, 2))
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return 1;
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if (test__fixsfdi(2.01F, 2))
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return 1;
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if (test__fixsfdi(-0.5F, 0))
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return 1;
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if (test__fixsfdi(-0.99F, 0))
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return 1;
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if (test__fixsfdi(-1.0F, -1))
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return 1;
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if (test__fixsfdi(-1.5F, -1))
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return 1;
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if (test__fixsfdi(-1.99F, -1))
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return 1;
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if (test__fixsfdi(-2.0F, -2))
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return 1;
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if (test__fixsfdi(-2.01F, -2))
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return 1;
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if (test__fixsfdi(0x1.FFFFFEp+62F, 0x7FFFFF8000000000LL))
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return 1;
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if (test__fixsfdi(0x1.FFFFFCp+62F, 0x7FFFFF0000000000LL))
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return 1;
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if (test__fixsfdi(-0x1.FFFFFEp+62F, 0x8000008000000000LL))
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return 1;
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if (test__fixsfdi(-0x1.FFFFFCp+62F, 0x8000010000000000LL))
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return 1;
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if (test__fixsfdi(-0x8000000000000000.0p+0F, 0x8000000000000000LL))
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return 1;
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return 0;
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}
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