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| author | Rich Felker <dalias@aerifal.cx> | 2012-11-15 08:37:58 -0500 |
|---|---|---|
| committer | Rich Felker <dalias@aerifal.cx> | 2012-11-15 08:37:58 -0500 |
| commit | 8bb181622222f2ee3462c8b021bcae4fcdbbd37a (patch) | |
| tree | 166a1be834c8cd5a4c2521d41d7ee506bd8c8e51 /src/math/acosl.c | |
| parent | 22781b4d8ecaf97ac52d2a501a2e7d3bc1920ce0 (diff) | |
| parent | 68847ecd3a644d3ffd9be58603be1a3fa437dff0 (diff) | |
| download | musl-8bb181622222f2ee3462c8b021bcae4fcdbbd37a.tar.gz musl-8bb181622222f2ee3462c8b021bcae4fcdbbd37a.tar.bz2 musl-8bb181622222f2ee3462c8b021bcae4fcdbbd37a.tar.xz musl-8bb181622222f2ee3462c8b021bcae4fcdbbd37a.zip | |
Merge remote-tracking branch 'nsz/math'
Diffstat (limited to 'src/math/acosl.c')
| -rw-r--r-- | src/math/acosl.c | 9 |
1 files changed, 4 insertions, 5 deletions
diff --git a/src/math/acosl.c b/src/math/acosl.c index cc565336..83857d49 100644 --- a/src/math/acosl.c +++ b/src/math/acosl.c @@ -23,9 +23,7 @@ long double acosl(long double x) } #elif (LDBL_MANT_DIG == 64 || LDBL_MANT_DIG == 113) && LDBL_MAX_EXP == 16384 #include "__invtrigl.h" - -static const long double -pi = 3.14159265358979323846264338327950280e+00L; +#define ACOS_CONST (BIAS - 65) /* 2**-65 */ long double acosl(long double x) { @@ -41,7 +39,8 @@ long double acosl(long double x) if (expsign > 0) return 0.0; /* acos(1) = 0 */ else - return pi + 2.0 * pio2_lo; /* acos(-1)= pi */ + // FIXME + return pi_hi + 2.0 * pio2_lo; /* acos(-1)= pi */ } return (x - x) / (x - x); /* acos(|x|>1) is NaN */ } @@ -60,7 +59,7 @@ long double acosl(long double x) s = sqrtl(z); r = p / q; w = r * s - pio2_lo; - return pi - 2.0 * (s + w); + return pi_hi - 2.0 * (s + w); } else { /* x > 0.5 */ z = (1.0 - x) * 0.5; s = sqrtl(z); |