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$FreeBSD$
--- ../src/share/native/java/lang/fdlibm/src/e_pow.c 11 Jul 2001 21:40:20 -0000 1.1.1.1
+++ ../src/share/native/java/lang/fdlibm/src/e_pow.c 30 Apr 2003 04:42:09 -0000
@@ -57,6 +57,9 @@
*/
#include "fdlibm.h"
+#if defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__bsdi__)
+#include "math_private.h"
+#endif
#ifdef __STDC__
static const double
@@ -108,8 +111,13 @@
int hx,hy,ix,iy;
unsigned lx,ly;
+#if defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__bsdi__)
+ EXTRACT_WORDS(hx,lx,x);
+ EXTRACT_WORDS(hy,ly,y);
+#else
hx = __HI(x); lx = __LO(x);
hy = __HI(y); ly = __LO(y);
+#endif
ix = hx&0x7fffffff; iy = hy&0x7fffffff;
/* y==zero: x**0 = 1 */
@@ -195,14 +203,22 @@
u = ivln2_h*t; /* ivln2_h has 21 sig. bits */
v = t*ivln2_l-w*ivln2;
t1 = u+v;
+#if defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__bsdi__)
+ SET_LOW_WORD(t1,0);
+#else
__LO(t1) = 0;
+#endif
t2 = v-(t1-u);
} else {
double s2,s_h,s_l,t_h,t_l;
n = 0;
/* take care subnormal number */
if(ix<0x00100000)
+#if defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__bsdi__)
+ {ax *= two53; n -= 53; GET_HIGH_WORD(ix,ax); }
+#else
{ax *= two53; n -= 53; ix = __HI(ax); }
+#endif
n += ((ix)>>20)-0x3ff;
j = ix&0x000fffff;
/* determine interval */
@@ -210,17 +226,29 @@
if(j<=0x3988E) k=0; /* |x|<sqrt(3/2) */
else if(j<0xBB67A) k=1; /* |x|<sqrt(3) */
else {k=0;n+=1;ix -= 0x00100000;}
+#if defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__bsdi__)
+ SET_HIGH_WORD(ax,ix);
+#else
__HI(ax) = ix;
+#endif
/* compute s = s_h+s_l = (x-1)/(x+1) or (x-1.5)/(x+1.5) */
u = ax-bp[k]; /* bp[0]=1.0, bp[1]=1.5 */
v = one/(ax+bp[k]);
s = u*v;
s_h = s;
+#if defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__bsdi__)
+ SET_LOW_WORD(s_h,0);
+#else
__LO(s_h) = 0;
+#endif
/* t_h=ax+bp[k] High */
t_h = zero;
+#if defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__bsdi__)
+ SET_HIGH_WORD(t_h,((ix>>1)|0x20000000)+0x00080000+(k<<18));
+#else
__HI(t_h)=((ix>>1)|0x20000000)+0x00080000+(k<<18);
+#endif
t_l = ax - (t_h-bp[k]);
s_l = v*((u-s_h*t_h)-s_h*t_l);
/* compute log(ax) */
@@ -229,21 +257,33 @@
r += s_l*(s_h+s);
s2 = s_h*s_h;
t_h = 3.0+s2+r;
+#if defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__bsdi__)
+ SET_LOW_WORD(t_h,0);
+#else
__LO(t_h) = 0;
+#endif
t_l = r-((t_h-3.0)-s2);
/* u+v = s*(1+...) */
u = s_h*t_h;
v = s_l*t_h+t_l*s;
/* 2/(3log2)*(s+...) */
p_h = u+v;
+#if defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__bsdi__)
+ SET_LOW_WORD(p_h,0);
+#else
__LO(p_h) = 0;
+#endif
p_l = v-(p_h-u);
z_h = cp_h*p_h; /* cp_h+cp_l = 2/(3*log2) */
z_l = cp_l*p_h+p_l*cp+dp_l[k];
/* log2(ax) = (s+..)*2/(3*log2) = n + dp_h + z_h + z_l */
t = (double)n;
t1 = (((z_h+z_l)+dp_h[k])+t);
+#if defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__bsdi__)
+ SET_LOW_WORD(t1,0);
+#else
__LO(t1) = 0;
+#endif
t2 = z_l-(((t1-t)-dp_h[k])-z_h);
}
@@ -252,12 +292,20 @@
/* split up y into y1+y2 and compute (y1+y2)*(t1+t2) */
y1 = y;
+#if defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__bsdi__)
+ SET_LOW_WORD(y1,0);
+#else
__LO(y1) = 0;
+#endif
p_l = (y-y1)*t1+y*t2;
p_h = y1*t1;
z = p_l+p_h;
+#if defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__bsdi__)
+ EXTRACT_WORDS(j,i,z);
+#else
j = __HI(z);
i = __LO(z);
+#endif
if (j>=0x40900000) { /* z >= 1024 */
if(((j-0x40900000)|i)!=0) /* if z > 1024 */
return s*huge*huge; /* overflow */
@@ -281,13 +329,21 @@
n = j+(0x00100000>>(k+1));
k = ((n&0x7fffffff)>>20)-0x3ff; /* new k for n */
t = zero;
+#if defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__bsdi__)
+ SET_HIGH_WORD(t,n&~(0x000fffff>>k));
+#else
__HI(t) = (n&~(0x000fffff>>k));
+#endif
n = ((n&0x000fffff)|0x00100000)>>(20-k);
if(j<0) n = -n;
p_h -= t;
}
t = p_l+p_h;
+#if defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__bsdi__)
+ SET_LOW_WORD(t,0);
+#else
__LO(t) = 0;
+#endif
u = t*lg2_h;
v = (p_l-(t-p_h))*lg2+t*lg2_l;
z = u+v;
@@ -296,9 +352,17 @@
t1 = z - t*(P1+t*(P2+t*(P3+t*(P4+t*P5))));
r = (z*t1)/(t1-two)-(w+z*w);
z = one-(r-z);
+#if defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__bsdi__)
+ GET_HIGH_WORD(j,z);
+#else
j = __HI(z);
+#endif
j += (n<<20);
if((j>>20)<=0) z = scalbn(z,n); /* subnormal output */
+#if defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__bsdi__)
+ else SET_HIGH_WORD(z,j);
+#else
else __HI(z) += (n<<20);
+#endif
return s*z;
}
|
