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[/] [openrisc/] [trunk/] [gnu-old/] [gcc-4.2.2/] [gcc/] [testsuite/] [gcc.dg/] [dfp/] [convert-dfp.c] - Rev 853
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/* { dg-options "-std=gnu99 -O0" } */ /* N1150 5.2 Conversions among decimal floating types and between decimal floating types and generic floating types. C99 6.3.1.5(3) New. Test various conversions involving decimal floating types. */ #include <decfloat.h> extern void abort (void); volatile _Decimal32 d32; volatile _Decimal64 d64; volatile _Decimal128 d128; int main () { /* Conversions to larger types. */ d32 = 123.4df; d64 = d32; if (d64 != 123.4dd) abort (); d128 = d32; if (d128 != 123.4dl) abort (); d64 = 345.678dd; d128 = d64; if (d128 != 345.678dl) abort (); /* Conversions to smaller types for which the value fits. */ d64 = 3456.789dd; d32 = d64; if (d32 != 3456.789df) abort (); d128 = 123.4567dl; d32 = d128; if (d32 != 123.4567dl) abort (); d128 = 1234567890.123456dl; d64 = d128; if (d64 != 1234567890.123456dd) abort (); /* Test demotion to non-representable decimal floating type. */ /* Assumes a default rounding mode of 'near'. This uses the rules describe in the 27 July 2005 draft of IEEE 754r, which are much more clear that what's described in draft 5 of N1107. */ /* Rounds to what _Decimal32 can handle. */ d64 = 9.99999949E96DD; d32 = d64; if (d32 != DEC32_MAX) abort(); /* Rounds to more than _Decimal32 can handle. */ d64 = 9.9999995E96DD; d32 = d64; if (d32 != __builtin_infd32()) abort(); /* Rounds to what _Decimal32 can handle. */ d128 = 9.99999949E96DD; d32 = d128; if (d32 != DEC32_MAX) abort(); /* Rounds to more than _Decimal32 can handle. */ d128= 9.9999995E96DD; d32 = d128; if (d32 != __builtin_infd32()) abort(); /* Rounds to what _Decimal64 can handle. */ d128 = 9.99999999999999949E384DL; d64 = d128; if (d64 != DEC64_MAX) abort(); /* Rounds to more than _Decimal64 can handle. */ d128 = 9.9999999999999995E384DL; d64 = d128; if (d64 != __builtin_infd64()) abort(); return 0; }
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