math: ld80 invtrig cleanups

[musl] / src / math / acosl.c

diff --git a/src/math/acosl.c b/src/math/acosl.c
index cc56533..83857d4 100644 (file)
--- 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"
 }
 #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)
 {
 
 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
                        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 */
        }
                }
                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;
                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);
        } else {                   /* x > 0.5 */
                z = (1.0 - x) * 0.5;
                s = sqrtl(z);