diff options
Diffstat (limited to 'sysdeps/ieee754/flt-32/e_sinhf.c')
| -rw-r--r-- | sysdeps/ieee754/flt-32/e_sinhf.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/sysdeps/ieee754/flt-32/e_sinhf.c b/sysdeps/ieee754/flt-32/e_sinhf.c index 0a3cc90cd1..17c2219c0b 100644 --- a/sysdeps/ieee754/flt-32/e_sinhf.c +++ b/sysdeps/ieee754/flt-32/e_sinhf.c @@ -13,6 +13,7 @@ * ==================================================== */ +#include <float.h> #include <math.h> #include <math_private.h> @@ -34,8 +35,14 @@ __ieee754_sinhf(float x) if (jx<0) h = -h; /* |x| in [0,22], return sign(x)*0.5*(E+E/(E+1))) */ if (ix < 0x41b00000) { /* |x|<22 */ - if (__builtin_expect(ix<0x31800000, 0)) /* |x|<2**-28 */ + if (__builtin_expect(ix<0x31800000, 0)) { /* |x|<2**-28 */ + if (fabsf (x) < FLT_MIN) + { + float force_underflow = x * x; + math_force_eval (force_underflow); + } if(shuge+x>one) return x;/* sinh(tiny) = tiny with inexact */ + } t = __expm1f(fabsf(x)); if(ix<0x3f800000) return h*((float)2.0*t-t*t/(t+one)); return h*(t+t/(t+one)); |