diff options
Diffstat (limited to 'newlib/libm/math/e_pow.c')
| -rw-r--r-- | newlib/libm/math/e_pow.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/newlib/libm/math/e_pow.c b/newlib/libm/math/e_pow.c index 56c7980ef..9312085d4 100644 --- a/newlib/libm/math/e_pow.c +++ b/newlib/libm/math/e_pow.c @@ -18,7 +18,7 @@ * 1. Compute and return log2(x) in two pieces: * log2(x) = w1 + w2, * where w1 has 53-24 = 29 bit trailing zeros. - * 2. Perform y*log2(x) = n+y' by simulating multi-precision + * 2. Perform y*log2(x) = n+y' by simulating muti-precision * arithmetic, where |y'|<=0.5. * 3. Return x**y = 2**n*exp(y'*log2) * @@ -179,7 +179,7 @@ ivln2_l = 1.92596299112661746887e-08; /* 0x3E54AE0B, 0xF85DDF44 =1/ln2 tail*/ } /* (x<0)**(non-int) is NaN */ - /* REDHAT LOCAL: This used to be + /* CYGNUS LOCAL: This used to be if((((hx>>31)+1)|yisint)==0) return (x-x)/(x-x); but ANSI C says a right shift of a signed negative quantity is implementation defined. */ @@ -196,7 +196,7 @@ ivln2_l = 1.92596299112661746887e-08; /* 0x3E54AE0B, 0xF85DDF44 =1/ln2 tail*/ if(ix>0x3ff00000) return (hy>0)? huge*huge:tiny*tiny; /* now |1-x| is tiny <= 2**-20, suffice to compute log(x) by x-x^2/2+x^3/3-x^4/4 */ - t = ax-1; /* t has 20 trailing zeros */ + t = x-1; /* t has 20 trailing zeros */ w = (t*t)*(0.5-t*(0.3333333333333333333333-t*0.25)); u = ivln2_h*t; /* ivln2_h has 21 sig. bits */ v = t*ivln2_l-w*ivln2; |