diff options
Diffstat (limited to 'sysdeps/ieee754/ldbl-128ibm/e_sinhl.c')
| -rw-r--r-- | sysdeps/ieee754/ldbl-128ibm/e_sinhl.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/sysdeps/ieee754/ldbl-128ibm/e_sinhl.c b/sysdeps/ieee754/ldbl-128ibm/e_sinhl.c index 1790bef87e..08e5d86b41 100644 --- a/sysdeps/ieee754/ldbl-128ibm/e_sinhl.c +++ b/sysdeps/ieee754/ldbl-128ibm/e_sinhl.c @@ -28,6 +28,7 @@ * only sinh(0)=0 is exact for finite x. */ +#include <float.h> #include <math.h> #include <math_private.h> @@ -52,8 +53,14 @@ __ieee754_sinhl(long double x) if (jx<0) h = -h; /* |x| in [0,40], return sign(x)*0.5*(E+E/(E+1))) */ if (ix < 0x4044000000000000LL) { /* |x|<40 */ - if (ix<0x3e20000000000000LL) /* |x|<2**-29 */ + if (ix<0x3e20000000000000LL) { /* |x|<2**-29 */ + if (fabsl (x) < LDBL_MIN) + { + long double force_underflow = x * x; + math_force_eval (force_underflow); + } if(shuge+x>one) return x;/* sinhl(tiny) = tiny with inexact */ + } t = __expm1l(fabsl(x)); if(ix<0x3ff0000000000000LL) return h*(2.0*t-t*t/(t+one)); w = t/(t+one); |