{
float_type z;
float_type ax;
+ unsigned long x_cond, y_cond;
- if (y == 0.0)
+ y_cond = __m81_test (y);
+ if (y_cond & __M81_COND_ZERO)
return 1.0;
- if (x != x || y != y)
+
+ x_cond = __m81_test (x);
+ if ((x_cond | y_cond) & __M81_COND_NAN)
return x + y;
- if (m81(__isinf) (y))
+ if (y_cond & __M81_COND_INF)
{
ax = s(fabs) (x);
if (ax == 1)
- return 0.0/0.0;
+ return y - y;
if (ax > 1)
- return y > 0 ? y : 0;
+ return y_cond & __M81_COND_NEG ? 0 : y;
else
- return y < 0 ? -y : 0;
+ return y_cond & __M81_COND_NEG ? -y : 0;
}
if (s(fabs) (y) == 1)
- return y > 0 ? x : 1 / x;
+ return y_cond & __M81_COND_NEG ? 1 / x : x;
if (y == 2)
return x * x;
- if (y == 0.5 && x >= 0)
+ if (y == 0.5 && !(x_cond & __M81_COND_NEG))
return m81(__ieee754_sqrt) (x);
if (x == 10.0)
}
ax = s(fabs) (x);
- if (m81(__isinf) (x) || x == 0 || ax == 1)
+ if (x_cond & (__M81_COND_INF | __M81_COND_ZERO) || ax == 1)
{
z = ax;
- if (y < 0)
+ if (y_cond & __M81_COND_NEG)
z = 1 / z;
- if (m81(__signbit) (x))
+ if (x_cond & __M81_COND_NEG)
{
if (y != m81(__rint) (y))
{
if (x == -1)
- z = 0.0/0.0;
+ z = (z - z) / (z - z);
}
else
goto maybe_negate;
return z;
}
- if (x < 0.0)
+ if (x_cond & __M81_COND_NEG)
{
if (y == m81(__rint) (y))
{
}
}
else
- z = 0.0/0.0;
+ z = (y - y) / (y - y);
}
else
z = m81(__ieee754_exp) (y * m81(__ieee754_log) (x));