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[/] [openrisc/] [trunk/] [gnu-src/] [gcc-4.5.1/] [gcc/] [testsuite/] [c-c++-common/] [dfp/] [constants-zero.c] - Rev 414
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/* { dg-options "-O0" } */ /* Decimal float values can have significant trailing zeroes. This is true for zero values as well. Check that various representations of zero are handled correctly when specified as literal constants. */ #include "dfp-dbg.h" int big_endian; typedef union U32 { unsigned int i; _Decimal32 d; unsigned char b[4]; } u32_t; typedef union U64 { unsigned long long i; _Decimal64 d; } u64_t; typedef union U128 { unsigned long long i[2]; _Decimal128 d; } u128_t; int compare32 (_Decimal32 d, unsigned int i) { u32_t u; u.d = d; return (u.i == i); } int compare64 (_Decimal64 d, unsigned long long i) { u64_t u; u.d = d; return (u.i == i); } int compare128 (_Decimal64 d, unsigned long long i, unsigned long long j) { u128_t u; u.d = d; if (big_endian) return (u.i[0] == i && u.i[1] == j); else return (u.i[1] == i && u.i[0] == j); } void dpd_tests (void) { if (! compare32 (0.DF, 0x22500000U)) FAILURE if (! compare32 (-0.DF, 0xa2500000U)) FAILURE if (! compare32 (0.E-4DF, 0x22100000U)) FAILURE if (! compare32 (0.E-7DF, 0x21e00000U)) FAILURE if (! compare32 (0.E+3DF, 0x22800000U)) FAILURE if (! compare64 (0.DD, 0x2238000000000000ULL)) FAILURE if (! compare64 (-0.DD, 0xa238000000000000ULL)) FAILURE if (! compare64 (0.E-6DD, 0x2220000000000000ULL)) FAILURE if (! compare64 (0.E-7DD, 0x221c000000000000ULL)) FAILURE if (! compare64 (0.E+2DD, 0x2240000000000000ULL)) FAILURE if (! compare128 (0.DL, 0x2208000000000000ULL, 0x0000000000000000ULL)) FAILURE if (! compare128 (-0.DL, 0xa208000000000000ULL, 0x0000000000000000ULL)) FAILURE if (! compare128 (0.E-3DL, 0x2207400000000000ULL, 0x0000000000000000ULL)) FAILURE if (! compare128 (0.E-8DL, 0x2206000000000000ULL, 0x0000000000000000ULL)) FAILURE if (! compare128 (0.E+2DL, 0x2208800000000000ULL, 0x0000000000000000ULL)) FAILURE } void bid_tests (void) { if (! compare32 (0.DF, 0x32800000U)) FAILURE if (! compare32 (-0.DF, 0xb2800000U)) FAILURE if (! compare32 (0.E-4DF, 0x30800000U)) FAILURE if (! compare32 (0.E-7DF, 0x2f000000U)) FAILURE if (! compare32 (0.E+3DF, 0x34000000U)) FAILURE if (! compare64 (0.DD, 0x31c0000000000000ULL)) FAILURE if (! compare64 (-0.DD, 0xb1c0000000000000ULL)) FAILURE if (! compare64 (0.E-6DD, 0x3100000000000000ULL)) FAILURE if (! compare64 (0.E-7DD, 0x30e0000000000000ULL)) FAILURE if (! compare64 (0.E+2DD, 0x3200000000000000ULL)) FAILURE if (! compare128 (0.DL, 0x3040000000000000ULL, 0x0000000000000000ULL)) FAILURE if (! compare128 (-0.DL, 0xb040000000000000ULL, 0x0000000000000000ULL)) FAILURE if (! compare128 (0.E-3DL, 0x303a000000000000ULL, 0x0000000000000000ULL)) FAILURE if (! compare128 (0.E-8DL, 0x3030000000000000ULL, 0x0000000000000000ULL)) FAILURE if (! compare128 (0.E+2DL, 0x3044000000000000ULL, 0x0000000000000000ULL)) FAILURE } int main () { u32_t u32; /* These sizes are probably always true for targets that support decimal float types, but check anyway. Abort so we can fix the test. */ if ((sizeof (_Decimal64) != sizeof (long long)) || (sizeof (_Decimal128) != 2 * sizeof (long long)) || (sizeof (_Decimal32) != sizeof (_Decimal32))) FAILURE u32.d = 1.DF; if (u32.i == 0x22500001) { big_endian = (u32.b[0] == 0x22); dpd_tests (); } else if (u32.i == 0x32800001) { big_endian = (u32.b[0] == 0x32); bid_tests (); } else FAILURE /* unknown format; test problem */ FINISH }
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