code cleanup of named constants

[musl] / src / math / erfl.c

diff --git a/src/math/erfl.c b/src/math/erfl.c
index a80c2ce..f744985 100644 (file)
--- a/src/math/erfl.c
+++ b/src/math/erfl.c
@@ -108,9 +108,6 @@ long double erfl(long double x)
 #elif LDBL_MANT_DIG == 64 && LDBL_MAX_EXP == 16384
 static const long double
 tiny = 1e-4931L,
-half = 0.5L,
-one = 1.0L,
-two = 2.0L,
 /* c = (float)0.84506291151 */
 erx = 0.845062911510467529296875L,
 
@@ -248,12 +245,12 @@ long double erfl(long double x)
        int32_t ix, i;
        uint32_t se, i0, i1;
 
-       GET_LDOUBLE_WORDS (se, i0, i1, x);
+       GET_LDOUBLE_WORDS(se, i0, i1, x);
        ix = se & 0x7fff;
 
        if (ix >= 0x7fff) {  /* erf(nan)=nan */
                i = ((se & 0xffff) >> 15) << 1;
-               return (long double)(1 - i) + one / x;  /* erf(+-inf)=+-1 */
+               return (long double)(1 - i) + 1.0 / x;  /* erf(+-inf)=+-1 */
        }
 
        ix = (ix << 16) | (i0 >> 16);
@@ -272,7 +269,7 @@ long double erfl(long double x)
                return x + x * y;
        }
        if (ix < 0x3fffa000) {  /* 0.84375 <= |x| < 1.25 */
-               s = fabsl (x) - one;
+               s = fabsl(x) - 1.0;
                P = pa[0] + s * (pa[1] + s * (pa[2] +
                     s * (pa[3] + s * (pa[4] + s * (pa[5] + s * (pa[6] + s * pa[7]))))));
                Q = qa[0] + s * (qa[1] + s * (qa[2] +
@@ -283,11 +280,11 @@ long double erfl(long double x)
        }
        if (ix >= 0x4001d555) {  /* inf > |x| >= 6.6666259765625 */
                if ((se & 0x8000) == 0)
-                       return one - tiny;
-               return tiny - one;
+                       return 1.0 - tiny;
+               return tiny - 1.0;
        }
        x = fabsl (x);
-       s = one / (x * x);
+       s = 1.0 / (x * x);
        if (ix < 0x4000b6db) {  /* 1.25 <= |x| < 2.85711669921875 ~ 1/.35 */
                R = ra[0] + s * (ra[1] + s * (ra[2] + s * (ra[3] + s * (ra[4] +
                     s * (ra[5] + s * (ra[6] + s * (ra[7] + s * ra[8])))))));
@@ -305,8 +302,8 @@ long double erfl(long double x)
        SET_LDOUBLE_WORDS(z, i, i0, i1);
        r = expl(-z * z - 0.5625) * expl((z - x) * (z + x) + R / S);
        if ((se & 0x8000) == 0)
-               return one - r / x;
-       return r / x - one;
+               return 1.0 - r / x;
+       return r / x - 1.0;
 }
 
 long double erfcl(long double x)
@@ -315,16 +312,16 @@ long double erfcl(long double x)
        long double R, S, P, Q, s, y, z, r;
        uint32_t se, i0, i1;
 
-       GET_LDOUBLE_WORDS (se, i0, i1, x);
+       GET_LDOUBLE_WORDS(se, i0, i1, x);
        ix = se & 0x7fff;
        if (ix >= 0x7fff) {  /* erfc(nan) = nan, erfc(+-inf) = 0,2 */
-               return (long double)(((se & 0xffff) >> 15) << 1) + one / x;
+               return (long double)(((se & 0xffff) >> 15) << 1) + 1.0 / x;
        }
 
        ix = (ix << 16) | (i0 >> 16);
        if (ix < 0x3ffed800) {  /* |x| < 0.84375 */
                if (ix < 0x3fbe0000)  /* |x| < 2**-65 */
-                       return one - x;
+                       return 1.0 - x;
                z = x * x;
                r = pp[0] + z * (pp[1] +
                     z * (pp[2] + z * (pp[3] + z * (pp[4] + z * pp[5]))));
@@ -332,27 +329,27 @@ long double erfcl(long double x)
                     z * (qq[2] + z * (qq[3] + z * (qq[4] + z * (qq[5] + z)))));
                y = r / s;
                if (ix < 0x3ffd8000) /* x < 1/4 */
-                       return one - (x + x * y);
+                       return 1.0 - (x + x * y);
                r = x * y;
-               r += x - half;
-               return half - r;
+               r += x - 0.5L;
+               return 0.5L - r;
        }
        if (ix < 0x3fffa000) {  /* 0.84375 <= |x| < 1.25 */
-               s = fabsl (x) - one;
+               s = fabsl(x) - 1.0;
                P = pa[0] + s * (pa[1] + s * (pa[2] +
                     s * (pa[3] + s * (pa[4] + s * (pa[5] + s * (pa[6] + s * pa[7]))))));
                Q = qa[0] + s * (qa[1] + s * (qa[2] +
                     s * (qa[3] + s * (qa[4] + s * (qa[5] + s * (qa[6] + s))))));
                if ((se & 0x8000) == 0) {
-                       z = one - erx;
+                       z = 1.0 - erx;
                        return z - P / Q;
                }
                z = erx + P / Q;
-               return one + z;
+               return 1.0 + z;
        }
        if (ix < 0x4005d600) {  /* |x| < 107 */
-               x = fabsl (x);
-               s = one / (x * x);
+               x = fabsl(x);
+               s = 1.0 / (x * x);
                if (ix < 0x4000b6db) {  /* 1.25 <= |x| < 2.85711669921875 ~ 1/.35 */
                        R = ra[0] + s * (ra[1] + s * (ra[2] + s * (ra[3] + s * (ra[4] +
                             s * (ra[5] + s * (ra[6] + s * (ra[7] + s * ra[8])))))));
@@ -365,26 +362,25 @@ long double erfcl(long double x)
                             s * (sb[5] + s * (sb[6] + s))))));
                } else { /* 107 > |x| >= 6.666 */
                        if (se & 0x8000)
-                               return two - tiny;/* x < -6.666 */
+                               return 2.0 - tiny;/* x < -6.666 */
                        R = rc[0] + s * (rc[1] + s * (rc[2] + s * (rc[3] +
                             s * (rc[4] + s * rc[5]))));
                        S = sc[0] + s * (sc[1] + s * (sc[2] + s * (sc[3] +
                             s * (sc[4] + s))));
                }
                z = x;
-               GET_LDOUBLE_WORDS (hx, i0, i1, z);
+               GET_LDOUBLE_WORDS(hx, i0, i1, z);
                i1 = 0;
                i0 &= 0xffffff00;
-               SET_LDOUBLE_WORDS (z, hx, i0, i1);
-               r = expl (-z * z - 0.5625) *
-               expl ((z - x) * (z + x) + R / S);
+               SET_LDOUBLE_WORDS(z, hx, i0, i1);
+               r = expl(-z * z - 0.5625) * expl((z - x) * (z + x) + R / S);
                if ((se & 0x8000) == 0)
                        return r / x;
-               return two - r / x;
+               return 2.0 - r / x;
        }
 
        if ((se & 0x8000) == 0)
                return tiny * tiny;
-       return two - tiny;
+       return 2.0 - tiny;
 }
 #endif