}
#elif (LDBL_MANT_DIG == 64 || LDBL_MANT_DIG == 113) && LDBL_MAX_EXP == 16384
#include "__invtrigl.h"
-static const volatile long double
-tiny = 1.0e-300;
-static const long double
-zero = 0.0,
-pi = 3.14159265358979323846264338327950280e+00L;
+// FIXME:
+static const volatile long double tiny = 1.0e-300;
long double atan2l(long double y, long double x)
{
if (expty==0 && ((uy.bits.manh&~LDBL_NBIT)|uy.bits.manl)==0) {
switch(m) {
case 0:
- case 1: return y; /* atan(+-0,+anything)=+-0 */
- case 2: return pi+tiny; /* atan(+0,-anything) = pi */
- case 3: return -pi-tiny; /* atan(-0,-anything) =-pi */
+ case 1: return y; /* atan(+-0,+anything)=+-0 */
+ case 2: return pi_hi+tiny; /* atan(+0,-anything) = pi */
+ case 3: return -pi_hi-tiny; /* atan(-0,-anything) =-pi */
}
}
/* when x = 0 */
switch(m) {
case 0: return pio2_hi*0.5+tiny; /* atan(+INF,+INF) */
case 1: return -pio2_hi*0.5-tiny; /* atan(-INF,+INF) */
- case 2: return 1.5*pio2_hi+tiny; /*atan(+INF,-INF)*/
- case 3: return -1.5*pio2_hi-tiny; /*atan(-INF,-INF)*/
+ case 2: return 1.5*pio2_hi+tiny; /* atan(+INF,-INF) */
+ case 3: return -1.5*pio2_hi-tiny; /* atan(-INF,-INF) */
}
} else {
switch(m) {
- case 0: return zero; /* atan(+...,+INF) */
- case 1: return -zero; /* atan(-...,+INF) */
- case 2: return pi+tiny; /* atan(+...,-INF) */
- case 3: return -pi-tiny; /* atan(-...,-INF) */
+ case 0: return 0.0; /* atan(+...,+INF) */
+ case 1: return -0.0; /* atan(-...,+INF) */
+ case 2: return pi_hi+tiny; /* atan(+...,-INF) */
+ case 3: return -pi_hi-tiny; /* atan(-...,-INF) */
}
}
}
else /* safe to do y/x */
z = atanl(fabsl(y/x));
switch (m) {
- case 0: return z; /* atan(+,+) */
- case 1: return -z; /* atan(-,+) */
- case 2: return pi - (z-pi_lo); /* atan(+,-) */
+ case 0: return z; /* atan(+,+) */
+ case 1: return -z; /* atan(-,+) */
+ case 2: return pi_hi-(z-pi_lo); /* atan(+,-) */
default: /* case 3 */
- return (z-pi_lo) - pi; /* atan(-,-) */
+ return (z-pi_lo)-pi_hi; /* atan(-,-) */
}
}
#endif