YourWishes/jerryscript
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Get rid of strict aliasing rule violations from libm (#3069)

Browse Source 
JerryScript-DCO-1.0-Signed-off-by: Csaba Osztrogonác oszi@inf.u-szeged.hu
This commit is contained in:
Csaba Osztrogonác
2019-10-01 14:37:18 +02:00
committed by Robert Fancsik
parent f7391a94ae
commit 3763ac8371
16 changed files with 246 additions and 197 deletions
Download Patch File Download Diff File Expand all files Collapse all files
jerry-libm/asin.c
+12 -11
View File
@@ -77,7 +77,8 @@
double
asin (double x)
{
double t, w, p, q, c, r, s;
double t, p, q, c, r, s;
double_accessor w;
int hx, ix;
hx = __HI (x);
@@ -102,28 +103,28 @@ asin (double x)
t = x * x;
p = t * (pS0 + t * (pS1 + t * (pS2 + t * (pS3 + t * (pS4 + t * pS5)))));
q = one + t * (qS1 + t * (qS2 + t * (qS3 + t * qS4)));
w = p / q;
return x + x * w;
w.dbl = p / q;
return x + x * w.dbl;
}
/* 1 > |x| >= 0.5 */
w = one - fabs (x);
t = w * 0.5;
w.dbl = one - fabs (x);
t = w.dbl * 0.5;
p = t * (pS0 + t * (pS1 + t * (pS2 + t * (pS3 + t * (pS4 + t * pS5)))));
q = one + t * (qS1 + t * (qS2 + t * (qS3 + t * qS4)));
s = sqrt (t);
if (ix >= 0x3FEF3333) /* if |x| > 0.975 */
{
w = p / q;
t = pio2_hi - (2.0 * (s + s * w) - pio2_lo);
w.dbl = p / q;
t = pio2_hi - (2.0 * (s + s * w.dbl) - pio2_lo);
}
else
{
w = s;
__LO (w) = 0;
c = (t - w * w) / (s + w);
w.dbl = s;
w.as_int.lo = 0;
c = (t - w.dbl * w.dbl) / (s + w.dbl);
r = p / q;
p = 2.0 * s * r - (pio2_lo - 2.0 * c);
q = pio4_hi - 2.0 * w;
q = pio4_hi - 2.0 * w.dbl;
t = pio4_hi - (p - q);
}
if (hx > 0)