summaryrefslogtreecommitdiff
diff options
context:
space:
mode:
-rw-r--r--src/math/fma.c14
-rw-r--r--src/math/fmaf.c2
-rw-r--r--src/math/fmal.c14
-rw-r--r--src/math/lrint.c2
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;
}