code cleanup of named constants

[musl] / src / math / expm1.c

diff --git a/src/math/expm1.c b/src/math/expm1.c
index ffa8226..f8f32c4 100644 (file)
--- a/src/math/expm1.c
+++ b/src/math/expm1.c
@@ -107,7 +107,6 @@
 #include "libm.h"
 
 static const double
-one         = 1.0,
 huge        = 1.0e+300,
 tiny        = 1.0e-300,
 o_threshold = 7.09782712893383973096e+02, /* 0x40862E42, 0xFEFA39EF */
@@ -148,7 +147,7 @@ double expm1(double x)
                if (xsb != 0) { /* x < -56*ln2, return -1.0 with inexact */
                        /* raise inexact */
                        if(x+tiny<0.0)
-                               return tiny-one;  /* return -1 */
+                               return tiny-1.0;  /* return -1 */
                }
        }
 
@@ -182,7 +181,7 @@ double expm1(double x)
        /* x is now in primary range */
        hfx = 0.5*x;
        hxs = x*hfx;
-       r1 = one+hxs*(Q1+hxs*(Q2+hxs*(Q3+hxs*(Q4+hxs*Q5))));
+       r1 = 1.0+hxs*(Q1+hxs*(Q2+hxs*(Q3+hxs*(Q4+hxs*Q5))));
        t  = 3.0-r1*hfx;
        e  = hxs*((r1-t)/(6.0 - x*t));
        if (k == 0)   /* c is 0 */
@@ -195,17 +194,17 @@ double expm1(double x)
        if (k == 1) {
                if (x < -0.25)
                        return -2.0*(e-(x+0.5));
-               return one+2.0*(x-e);
+               return 1.0+2.0*(x-e);
        }
        if (k <= -2 || k > 56) {  /* suffice to return exp(x)-1 */
-               y = one - (e-x);
+               y = 1.0 - (e-x);
                if (k == 1024)
                        y = y*2.0*0x1p1023;
                else
                        y = y*twopk;
-               return y - one;
+               return y - 1.0;
        }
-       t = one;
+       t = 1.0;
        if (k < 20) {
                SET_HIGH_WORD(t, 0x3ff00000 - (0x200000>>k));  /* t=1-2^-k */
                y = t-(e-x);
@@ -213,7 +212,7 @@ double expm1(double x)
        } else {
                SET_HIGH_WORD(t, ((0x3ff-k)<<20));  /* 2^-k */
                y = x-(e+t);
-               y += one;
+               y += 1.0;
                y = y*twopk;
        }
        return y;