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fix extremely rare but dangerous race condition in robust mutexes
[musl]
/
src
/
math
/
atan2l.c
diff --git
a/src/math/atan2l.c
b/src/math/atan2l.c
index
48abc05
..
0fc901c
100644
(file)
--- a/
src/math/atan2l.c
+++ b/
src/math/atan2l.c
@@
-27,7
+27,6
@@
long double atan2l(long double y, long double x)
static const volatile long double
tiny = 1.0e-300;
static const long double
static const volatile long double
tiny = 1.0e-300;
static const long double
-zero = 0.0,
pi = 3.14159265358979323846264338327950280e+00L;
long double atan2l(long double y, long double x)
pi = 3.14159265358979323846264338327950280e+00L;
long double atan2l(long double y, long double x)
@@
-75,8
+74,8
@@
long double atan2l(long double y, long double x)
}
} else {
switch(m) {
}
} else {
switch(m) {
- case 0: return
zero;
/* atan(+...,+INF) */
- case 1: return -
zero;
/* atan(-...,+INF) */
+ case 0: return
0.0;
/* atan(+...,+INF) */
+ case 1: return -
0.0;
/* atan(-...,+INF) */
case 2: return pi+tiny; /* atan(+...,-INF) */
case 3: return -pi-tiny; /* atan(-...,-INF) */
}
case 2: return pi+tiny; /* atan(+...,-INF) */
case 3: return -pi-tiny; /* atan(-...,-INF) */
}