372 lines
7.8 KiB
C
372 lines
7.8 KiB
C
/* Test front-end conversions, optimizer conversions, and run-time
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conversions between different arithmetic types.
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Constants are specified in a non-obvious way to make them work for
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any word size. Their value on a 32-bit machine is indicated in the
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comments.
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Note that this code is NOT intended for testing of accuracy of fp
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conversions. */
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float
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u2f(u)
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unsigned int u;
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{
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return u;
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}
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double
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u2d(u)
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unsigned int u;
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{
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return u;
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}
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float
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s2f(s)
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int s;
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{
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return s;
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}
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double
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s2d(s)
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int s;
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{
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return s;
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}
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int
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fnear (float x, float y)
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{
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float t = x - y;
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return t == 0 || x / t > 1000000.0;
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}
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int
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dnear (double x, double y)
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{
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double t = x - y;
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return t == 0 || x / t > 100000000000000.0;
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}
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test_integer_to_float()
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{
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if (u2f(0U) != (float) 0U) /* 0 */
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abort();
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if (!fnear (u2f(~0U), (float) ~0U)) /* 0xffffffff */
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abort();
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if (!fnear (u2f((~0U) >> 1), (float) ((~0U) >> 1))) /* 0x7fffffff */
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abort();
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if (u2f(~((~0U) >> 1)) != (float) ~((~0U) >> 1)) /* 0x80000000 */
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abort();
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if (u2d(0U) != (double) 0U) /* 0 */
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abort();
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if (!dnear (u2d(~0U), (double) ~0U)) /* 0xffffffff */
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abort();
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if (!dnear (u2d((~0U) >> 1),(double) ((~0U) >> 1))) /* 0x7fffffff */
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abort();
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if (u2d(~((~0U) >> 1)) != (double) ~((~0U) >> 1)) /* 0x80000000 */
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abort();
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if (s2f(0) != (float) 0) /* 0 */
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abort();
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if (!fnear (s2f(~0), (float) ~0)) /* 0xffffffff */
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abort();
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if (!fnear (s2f((int)((~0U) >> 1)), (float)(int)((~0U) >> 1))) /* 0x7fffffff */
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abort();
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if (s2f((int)(~((~0U) >> 1))) != (float)(int)~((~0U) >> 1)) /* 0x80000000 */
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abort();
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if (s2d(0) != (double) 0) /* 0 */
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abort();
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if (!dnear (s2d(~0), (double) ~0)) /* 0xffffffff */
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abort();
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if (!dnear (s2d((int)((~0U) >> 1)), (double)(int)((~0U) >> 1))) /* 0x7fffffff */
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abort();
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if (s2d((int)~((~0U) >> 1)) != (double)(int)~((~0U) >> 1)) /* 0x80000000 */
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abort();
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}
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#if __GNUC__
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float
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ull2f(u)
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unsigned long long int u;
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{
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return u;
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}
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double
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ull2d(u)
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unsigned long long int u;
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{
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return u;
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}
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float
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sll2f(s)
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long long int s;
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{
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return s;
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}
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double
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sll2d(s)
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long long int s;
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{
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return s;
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}
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test_longlong_integer_to_float()
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{
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if (ull2f(0ULL) != (float) 0ULL) /* 0 */
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abort();
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if (ull2f(~0ULL) != (float) ~0ULL) /* 0xffffffff */
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abort();
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if (ull2f((~0ULL) >> 1) != (float) ((~0ULL) >> 1)) /* 0x7fffffff */
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abort();
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if (ull2f(~((~0ULL) >> 1)) != (float) ~((~0ULL) >> 1)) /* 0x80000000 */
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abort();
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if (ull2d(0ULL) != (double) 0ULL) /* 0 */
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abort();
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#if __HAVE_68881__
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/* Some 68881 targets return values in fp0, with excess precision.
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But the compile-time conversion to double works correctly. */
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if (! dnear (ull2d(~0ULL), (double) ~0ULL)) /* 0xffffffff */
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abort();
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if (! dnear (ull2d((~0ULL) >> 1), (double) ((~0ULL) >> 1))) /* 0x7fffffff */
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abort();
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#else
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if (ull2d(~0ULL) != (double) ~0ULL) /* 0xffffffff */
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abort();
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if (ull2d((~0ULL) >> 1) != (double) ((~0ULL) >> 1)) /* 0x7fffffff */
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abort();
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#endif
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if (ull2d(~((~0ULL) >> 1)) != (double) ~((~0ULL) >> 1)) /* 0x80000000 */
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abort();
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if (sll2f(0LL) != (float) 0LL) /* 0 */
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abort();
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if (sll2f(~0LL) != (float) ~0LL) /* 0xffffffff */
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abort();
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if (! fnear (sll2f((long long int)((~0ULL) >> 1)), (float)(long long int)((~0ULL) >> 1))) /* 0x7fffffff */
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abort();
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if (sll2f((long long int)(~((~0ULL) >> 1))) != (float)(long long int)~((~0ULL) >> 1)) /* 0x80000000 */
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abort();
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if (sll2d(0LL) != (double) 0LL) /* 0 */
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abort();
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if (sll2d(~0LL) != (double) ~0LL) /* 0xffffffff */
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abort();
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if (!dnear (sll2d((long long int)((~0ULL) >> 1)), (double)(long long int)((~0ULL) >> 1))) /* 0x7fffffff */
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abort();
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if (! dnear (sll2d((long long int)~((~0ULL) >> 1)), (double)(long long int)~((~0ULL) >> 1))) /* 0x80000000 */
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abort();
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}
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#endif
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unsigned int
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f2u(float f)
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{
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return (unsigned) f;
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}
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unsigned int
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d2u(double d)
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{
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return (unsigned) d;
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}
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int
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f2s(float f)
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{
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return (int) f;
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}
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int
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d2s(double d)
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{
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return (int) d;
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}
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test_float_to_integer()
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{
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if (f2u(0.0) != 0)
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abort();
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if (f2u(0.999) != 0)
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abort();
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if (f2u(1.0) != 1)
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abort();
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if (f2u(1.99) != 1)
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abort();
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if (f2u((float) ((~0U) >> 1)) != (~0U) >> 1 && /* 0x7fffffff */
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f2u((float) ((~0U) >> 1)) != ((~0U) >> 1) + 1)
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abort();
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if (f2u((float) ~((~0U) >> 1)) != ~((~0U) >> 1)) /* 0x80000000 */
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abort();
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/* These tests require double precision, so for hosts that don't offer
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that much precision, just ignore these test. */
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if (sizeof (double) >= 8) {
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if (d2u(0.0) != 0)
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abort();
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if (d2u(0.999) != 0)
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abort();
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if (d2u(1.0) != 1)
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abort();
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if (d2u(1.99) != 1)
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abort();
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if (d2u((double) (~0U)) != ~0U) /* 0xffffffff */
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abort();
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if (d2u((double) ((~0U) >> 1)) != (~0U) >> 1) /* 0x7fffffff */
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abort();
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if (d2u((double) ~((~0U) >> 1)) != ~((~0U) >> 1)) /* 0x80000000 */
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abort();
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}
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if (f2s(0.0) != 0)
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abort();
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if (f2s(0.999) != 0)
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abort();
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if (f2s(1.0) != 1)
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abort();
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if (f2s(1.99) != 1)
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abort();
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if (f2s(-0.999) != 0)
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abort();
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if (f2s(-1.0) != -1)
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abort();
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if (f2s(-1.99) != -1)
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abort();
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if (f2s((float)(int)~((~0U) >> 1)) != (int)~((~0U) >> 1)) /* 0x80000000 */
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abort();
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/* These tests require double precision, so for hosts that don't offer
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that much precision, just ignore these test. */
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if (sizeof (double) >= 8) {
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if (d2s(0.0) != 0)
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abort();
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if (d2s(0.999) != 0)
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abort();
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if (d2s(1.0) != 1)
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abort();
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if (d2s(1.99) != 1)
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abort();
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if (d2s(-0.999) != 0)
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abort();
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if (d2s(-1.0) != -1)
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abort();
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if (d2s(-1.99) != -1)
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abort();
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if (d2s((double) ((~0U) >> 1)) != (~0U) >> 1) /* 0x7fffffff */
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abort();
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if (d2s((double)(int)~((~0U) >> 1)) != (int)~((~0U) >> 1)) /* 0x80000000 */
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abort();
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}
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}
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#if __GNUC__
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unsigned long long int
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f2ull(float f)
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{
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return (unsigned long long int) f;
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}
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unsigned long long int
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d2ull(double d)
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{
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return (unsigned long long int) d;
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}
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long long int
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f2sll(float f)
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{
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return (long long int) f;
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}
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long long int
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d2sll(double d)
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{
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return (long long int) d;
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}
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test_float_to_longlong_integer()
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{
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if (f2ull(0.0) != 0LL)
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abort();
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if (f2ull(0.999) != 0LL)
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abort();
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if (f2ull(1.0) != 1LL)
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abort();
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if (f2ull(1.99) != 1LL)
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abort();
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if (f2ull((float) ((~0ULL) >> 1)) != (~0ULL) >> 1 && /* 0x7fffffff */
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f2ull((float) ((~0ULL) >> 1)) != ((~0ULL) >> 1) + 1)
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abort();
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if (f2ull((float) ~((~0ULL) >> 1)) != ~((~0ULL) >> 1)) /* 0x80000000 */
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abort();
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if (d2ull(0.0) != 0LL)
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abort();
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if (d2ull(0.999) != 0LL)
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abort();
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if (d2ull(1.0) != 1LL)
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abort();
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if (d2ull(1.99) != 1LL)
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abort();
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if (d2ull((double) ((~0ULL) >> 1)) != (~0ULL) >> 1 && /* 0x7fffffff */
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d2ull((double) ((~0ULL) >> 1)) != ((~0ULL) >> 1) + 1)
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abort();
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if (d2ull((double) ~((~0ULL) >> 1)) != ~((~0ULL) >> 1)) /* 0x80000000 */
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abort();
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if (f2sll(0.0) != 0LL)
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abort();
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if (f2sll(0.999) != 0LL)
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abort();
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if (f2sll(1.0) != 1LL)
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abort();
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if (f2sll(1.99) != 1LL)
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abort();
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if (f2sll(-0.999) != 0LL)
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abort();
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if (f2sll(-1.0) != -1LL)
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abort();
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if (f2sll(-1.99) != -1LL)
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abort();
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if (f2sll((float)(long long int)~((~0ULL) >> 1)) != (long long int)~((~0ULL) >> 1)) /* 0x80000000 */
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abort();
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if (d2sll(0.0) != 0LL)
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abort();
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if (d2sll(0.999) != 0LL)
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abort();
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if (d2sll(1.0) != 1LL)
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abort();
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if (d2sll(1.99) != 1LL)
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abort();
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if (d2sll(-0.999) != 0LL)
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abort();
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if (d2sll(-1.0) != -1LL)
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abort();
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if (d2sll(-1.99) != -1LL)
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abort();
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if (d2sll((double)(long long int)~((~0ULL) >> 1)) != (long long int)~((~0ULL) >> 1)) /* 0x80000000 */
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abort();
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}
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#endif
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main()
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{
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test_integer_to_float();
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test_float_to_integer();
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#if __GNUC__
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test_longlong_integer_to_float();
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test_float_to_longlong_integer();
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#endif
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exit(0);
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}
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