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0af797def3
For some tests, just claim that fetestexcept() always returns true, so the rest of the test can be compiled. For libm-test, provide known bogus values for unsupported rounding modes, so fesetround() will return failure. Elsewhere, just add some #ifdefs to avoid code that uses particular FP exceptions if the exceptions aren't supported.
327 lines
7.0 KiB
C
327 lines
7.0 KiB
C
#include <fenv.h>
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#include <math.h>
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#include <float.h>
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#include <stdlib.h>
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#include <stdio.h>
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#if !defined(FE_OVERFLOW) && !defined(FE_UNDERFLOW)
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/* If there's no support for the exceptions this test is checking,
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then just return success and allow the test to be compiled. */
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# define fetestexcept(e) 1
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#endif
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float zero = 0.0;
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float inf = INFINITY;
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int
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main (void)
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{
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int result = 0;
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long double tl = (long double) FLT_MAX + 0x1.0p128L;
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float fi = INFINITY;
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float m = FLT_MAX;
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feclearexcept (FE_ALL_EXCEPT);
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if (nexttowardf (m, tl) != fi)
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{
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puts ("nexttowardf+ failed");
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++result;
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}
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if (fetestexcept (FE_OVERFLOW) == 0)
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{
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puts ("nexttowardf+ did not overflow");
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++result;
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}
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feclearexcept (FE_ALL_EXCEPT);
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if (nexttowardf (-m, -tl) != -fi)
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{
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puts ("nexttowardf- failed");
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++result;
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}
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if (fetestexcept (FE_OVERFLOW) == 0)
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{
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puts ("nexttowardf- did not overflow");
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++result;
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}
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fi = 0;
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m = FLT_MIN;
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feclearexcept (FE_ALL_EXCEPT);
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fi = nexttowardf (m, fi);
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if (fi < 0 || fi >= FLT_MIN)
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{
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puts ("nexttowardf+ failed");
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++result;
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}
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if (fetestexcept (FE_UNDERFLOW) == 0)
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{
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puts ("nexttowardf+ did not underflow");
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++result;
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}
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fi = 0;
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feclearexcept (FE_ALL_EXCEPT);
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fi = nexttowardf (-m, -fi);
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if (fi > 0 || fi <= -FLT_MIN)
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{
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puts ("nexttowardf- failed");
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++result;
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}
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if (fetestexcept (FE_UNDERFLOW) == 0)
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{
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puts ("nexttowardf- did not underflow");
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++result;
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}
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fi = -INFINITY;
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feclearexcept (FE_ALL_EXCEPT);
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m = nexttowardf (zero, inf);
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if (m < 0.0 || m >= FLT_MIN)
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{
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puts ("nexttowardf+ failed");
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++result;
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}
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if (fetestexcept (FE_UNDERFLOW) == 0)
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{
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puts ("nexttowardf+ did not underflow");
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++result;
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}
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feclearexcept (FE_ALL_EXCEPT);
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if (nexttowardf (m, fi) != 0.0)
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{
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puts ("nexttowardf+ failed");
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++result;
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}
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if (fetestexcept (FE_UNDERFLOW) == 0)
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{
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puts ("nexttowardf+ did not underflow");
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++result;
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}
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feclearexcept (FE_ALL_EXCEPT);
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m = nexttowardf (copysignf (zero, -1.0), -inf);
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if (m > 0.0 || m <= -FLT_MIN)
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{
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puts ("nexttowardf- failed");
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++result;
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}
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if (fetestexcept (FE_UNDERFLOW) == 0)
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{
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puts ("nexttowardf- did not underflow");
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++result;
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}
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feclearexcept (FE_ALL_EXCEPT);
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if (nexttowardf (m, -fi) != 0.0)
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{
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puts ("nexttowardf- failed");
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++result;
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}
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if (fetestexcept (FE_UNDERFLOW) == 0)
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{
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puts ("nexttowardf- did not underflow");
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++result;
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}
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tl = (long double) DBL_MAX + 1.0e305L;
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double di = INFINITY;
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double dm = DBL_MAX;
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feclearexcept (FE_ALL_EXCEPT);
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if (nexttoward (dm, tl) != di)
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{
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puts ("nexttoward+ failed");
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++result;
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}
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if (fetestexcept (FE_OVERFLOW) == 0)
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{
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puts ("nexttoward+ did not overflow");
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++result;
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}
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feclearexcept (FE_ALL_EXCEPT);
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if (nexttoward (-dm, -tl) != -di)
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{
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puts ("nexttoward- failed");
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++result;
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}
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if (fetestexcept (FE_OVERFLOW) == 0)
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{
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puts ("nexttoward- did not overflow");
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++result;
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}
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di = 0;
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dm = DBL_MIN;
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feclearexcept (FE_ALL_EXCEPT);
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di = nexttoward (dm, di);
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if (di < 0 || di >= DBL_MIN)
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{
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puts ("nexttoward+ failed");
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++result;
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}
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if (fetestexcept (FE_UNDERFLOW) == 0)
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{
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puts ("nexttoward+ did not underflow");
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++result;
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}
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di = 0;
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feclearexcept (FE_ALL_EXCEPT);
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di = nexttoward (-dm, -di);
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if (di > 0 || di <= -DBL_MIN)
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{
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puts ("nexttoward- failed");
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++result;
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}
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if (fetestexcept (FE_UNDERFLOW) == 0)
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{
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puts ("nexttoward- did not underflow");
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++result;
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}
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di = -INFINITY;
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feclearexcept (FE_ALL_EXCEPT);
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dm = nexttoward (zero, inf);
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if (dm < 0.0 || dm >= DBL_MIN)
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{
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puts ("nexttoward+ failed");
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++result;
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}
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if (fetestexcept (FE_UNDERFLOW) == 0)
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{
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puts ("nexttoward+ did not underflow");
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++result;
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}
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feclearexcept (FE_ALL_EXCEPT);
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if (nexttoward (dm, di) != 0.0)
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{
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puts ("nexttoward+ failed");
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++result;
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}
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if (fetestexcept (FE_UNDERFLOW) == 0)
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{
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puts ("nexttoward+ did not underflow");
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++result;
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}
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feclearexcept (FE_ALL_EXCEPT);
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dm = nexttoward (copysign (zero, -1.0), -inf);
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if (dm > 0.0 || dm <= -DBL_MIN)
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{
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puts ("nexttoward- failed");
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++result;
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}
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if (fetestexcept (FE_UNDERFLOW) == 0)
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{
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puts ("nexttoward- did not underflow");
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++result;
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}
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feclearexcept (FE_ALL_EXCEPT);
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if (nexttoward (dm, -di) != 0.0)
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{
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puts ("nexttoward- failed");
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++result;
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}
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if (fetestexcept (FE_UNDERFLOW) == 0)
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{
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puts ("nexttoward- did not underflow");
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++result;
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}
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#ifndef NO_LONG_DOUBLE
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long double li = INFINITY;
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long double lm = LDBL_MAX;
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feclearexcept (FE_ALL_EXCEPT);
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if (nexttowardl (lm, li) != li)
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{
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puts ("nexttowardl+ failed");
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++result;
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}
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if (fetestexcept (FE_OVERFLOW) == 0)
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{
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puts ("nexttowardl+ did not overflow");
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++result;
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}
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feclearexcept (FE_ALL_EXCEPT);
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if (nexttowardl (-lm, -li) != -li)
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{
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puts ("nexttowardl failed");
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++result;
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}
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if (fetestexcept (FE_OVERFLOW) == 0)
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{
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puts ("nexttowardl- did not overflow");
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++result;
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}
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li = 0;
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lm = LDBL_MIN;
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feclearexcept (FE_ALL_EXCEPT);
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li = nexttowardl (lm, li);
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if (li < 0 || li >= LDBL_MIN)
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{
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puts ("nexttowardl+ failed");
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++result;
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}
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if (fetestexcept (FE_UNDERFLOW) == 0)
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{
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puts ("nexttowardl+ did not underflow");
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++result;
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}
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li = 0;
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feclearexcept (FE_ALL_EXCEPT);
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li = nexttowardl (-lm, -li);
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if (li > 0 || li <= -LDBL_MIN)
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{
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puts ("nexttowardl- failed");
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++result;
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}
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if (fetestexcept (FE_UNDERFLOW) == 0)
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{
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puts ("nexttowardl- did not underflow");
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++result;
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}
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li = -INFINITY;
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feclearexcept (FE_ALL_EXCEPT);
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lm = nexttowardl (zero, inf);
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if (lm < 0.0 || lm >= LDBL_MIN)
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{
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puts ("nexttowardl+ failed");
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++result;
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}
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if (fetestexcept (FE_UNDERFLOW) == 0)
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{
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puts ("nexttowardl+ did not underflow");
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++result;
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}
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feclearexcept (FE_ALL_EXCEPT);
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if (nexttowardl (lm, li) != 0.0)
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{
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puts ("nexttowardl+ failed");
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++result;
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}
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if (fetestexcept (FE_UNDERFLOW) == 0)
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{
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puts ("nexttowardl+ did not underflow");
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++result;
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}
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feclearexcept (FE_ALL_EXCEPT);
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lm = nexttowardl (copysign (zero, -1.0), -inf);
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if (lm > 0.0 || lm <= -LDBL_MIN)
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{
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puts ("nexttowardl- failed");
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++result;
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}
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if (fetestexcept (FE_UNDERFLOW) == 0)
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{
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puts ("nexttowardl- did not underflow");
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++result;
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}
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feclearexcept (FE_ALL_EXCEPT);
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if (nexttowardl (lm, -li) != 0.0)
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{
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puts ("nexttowardl- failed");
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++result;
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}
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if (fetestexcept (FE_UNDERFLOW) == 0)
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{
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puts ("nexttowardl- did not underflow");
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++result;
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}
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#endif
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return result;
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}
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