mirror of
git://sourceware.org/git/glibc.git
synced 2024-12-21 04:31:04 +08:00
e42a38dd9d
The patch increase the high value to check if expl overflows. Current high mark value is not really correct, the algorithm accepts high values. It also adds a correct wrapper function to check for overflow and underflow.
25 lines
646 B
C
25 lines
646 B
C
#include <math.h>
|
|
#include <math_private.h>
|
|
#include <math_ldbl_opt.h>
|
|
|
|
static const long double o_thres = 709.78271289338399678773454114191496482L;
|
|
static const long double u_thres = -744.44007192138126231410729844608163411L;
|
|
|
|
long double __expl(long double x) /* wrapper exp */
|
|
{
|
|
long double z;
|
|
z = __ieee754_expl(x);
|
|
if (_LIB_VERSION == _IEEE_)
|
|
return z;
|
|
if (__finitel(x))
|
|
{
|
|
if (x >= o_thres)
|
|
return __kernel_standard_l(x,x,206); /* exp overflow */
|
|
else if (x <= u_thres)
|
|
return __kernel_standard_l(x,x,207); /* exp underflow */
|
|
}
|
|
return z;
|
|
}
|
|
hidden_def (__expl)
|
|
long_double_symbol (libm, __expl, expl);
|