diff options
Diffstat (limited to 'newlib/libm/common/sf_cbrt.c')
| -rw-r--r-- | newlib/libm/common/sf_cbrt.c | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/newlib/libm/common/sf_cbrt.c b/newlib/libm/common/sf_cbrt.c index c053d95..fe632f0 100644 --- a/newlib/libm/common/sf_cbrt.c +++ b/newlib/libm/common/sf_cbrt.c @@ -53,13 +53,14 @@ G = 3.5714286566e-01; /* 5/14 = 0x3eb6db6e */ GET_FLOAT_WORD(hx,x); sign=hx&0x80000000; /* sign= sign(x) */ hx ^=sign; - if(hx>=0x7f800000) return(x+x); /* cbrt(NaN,INF) is itself */ - if(hx==0) - return(x); /* cbrt(0) is itself */ + if(!FLT_UWORD_IS_FINITE(hx)) + return(x+x); /* cbrt(NaN,INF) is itself */ + if(FLT_UWORD_IS_ZERO(hx)) + return(x); /* cbrt(0) is itself */ SET_FLOAT_WORD(x,hx); /* x <- |x| */ /* rough cbrt to 5 bits */ - if(hx<0x00800000) /* subnormal number */ + if(FLT_UWORD_IS_SUBNORMAL(hx)) /* subnormal number */ {SET_FLOAT_WORD(t,0x4b800000); /* set t= 2**24 */ t*=x; GET_FLOAT_WORD(high,t); SET_FLOAT_WORD(t,high/3+B2); } |