diff options
Diffstat (limited to 'src/math')
| -rw-r--r-- | src/math/fma.c | 14 | ||||
| -rw-r--r-- | src/math/fmaf.c | 2 | ||||
| -rw-r--r-- | src/math/fmal.c | 14 | ||||
| -rw-r--r-- | src/math/lrint.c | 2 |
4 files changed, 28 insertions, 4 deletions
diff --git a/src/math/fma.c b/src/math/fma.c index c53f3148..f44ecda7 100644 --- a/src/math/fma.c +++ b/src/math/fma.c @@ -199,27 +199,37 @@ double fma(double x, double y, double z) * modes other than FE_TONEAREST are painful. */ if (spread < -DBL_MANT_DIG) { +#ifdef FE_INEXACT feraiseexcept(FE_INEXACT); +#endif +#ifdef FE_UNDERFLOW if (!isnormal(z)) feraiseexcept(FE_UNDERFLOW); +#endif switch (oround) { - case FE_TONEAREST: + default: /* FE_TONEAREST */ return (z); +#ifdef FE_TOWARDZERO case FE_TOWARDZERO: if (x > 0.0 ^ y < 0.0 ^ z < 0.0) return (z); else return (nextafter(z, 0)); +#endif +#ifdef FE_DOWNWARD case FE_DOWNWARD: if (x > 0.0 ^ y < 0.0) return (z); else return (nextafter(z, -INFINITY)); - default: /* FE_UPWARD */ +#endif +#ifdef FE_UPWARD + case FE_UPWARD: if (x > 0.0 ^ y < 0.0) return (nextafter(z, INFINITY)); else return (z); +#endif } } if (spread <= DBL_MANT_DIG * 2) diff --git a/src/math/fmaf.c b/src/math/fmaf.c index 0dccf108..cc427fb5 100644 --- a/src/math/fmaf.c +++ b/src/math/fmaf.c @@ -54,7 +54,9 @@ float fmaf(float x, float y, float z) * If result is inexact, and exactly halfway between two float values, * we need to adjust the low-order bit in the direction of the error. */ +#ifdef FE_TOWARDZERO fesetround(FE_TOWARDZERO); +#endif volatile double vxy = xy; /* XXX work around gcc CSE bug */ double adjusted_result = vxy + z; fesetround(FE_TONEAREST); diff --git a/src/math/fmal.c b/src/math/fmal.c index 200bd5a5..3944c292 100644 --- a/src/math/fmal.c +++ b/src/math/fmal.c @@ -194,27 +194,37 @@ long double fmal(long double x, long double y, long double z) * modes other than FE_TONEAREST are painful. */ if (spread < -LDBL_MANT_DIG) { +#ifdef FE_INEXACT feraiseexcept(FE_INEXACT); +#endif +#ifdef FE_UNDERFLOW if (!isnormal(z)) feraiseexcept(FE_UNDERFLOW); +#endif switch (oround) { - case FE_TONEAREST: + default: /* FE_TONEAREST */ return (z); +#ifdef FE_TOWARDZERO case FE_TOWARDZERO: if (x > 0.0 ^ y < 0.0 ^ z < 0.0) return (z); else return (nextafterl(z, 0)); +#endif +#ifdef FE_DOWNWARD case FE_DOWNWARD: if (x > 0.0 ^ y < 0.0) return (z); else return (nextafterl(z, -INFINITY)); - default: /* FE_UPWARD */ +#endif +#ifdef FE_UPWARD + case FE_UPWARD: if (x > 0.0 ^ y < 0.0) return (nextafterl(z, INFINITY)); else return (z); +#endif } } if (spread <= LDBL_MANT_DIG * 2) diff --git a/src/math/lrint.c b/src/math/lrint.c index 98d58ad0..9754fa74 100644 --- a/src/math/lrint.c +++ b/src/math/lrint.c @@ -49,8 +49,10 @@ dtype fn(type x) feholdexcept(&env); d = (dtype)roundit(x); +#if defined(FE_INVALID) && defined(FE_INEXACT) if (fetestexcept(FE_INVALID)) feclearexcept(FE_INEXACT); +#endif feupdateenv(&env); return d; } |