code cleanup of named constants

[musl] / src / math / tanhf.c

diff --git a/src/math/tanhf.c b/src/math/tanhf.c
index 97d0eb5..7cb459d 100644 (file)
--- a/src/math/tanhf.c
+++ b/src/math/tanhf.c
@@ -15,7 +15,9 @@
 
 #include "libm.h"
 
-static const float one = 1.0, two = 2.0, tiny = 1.0e-30, huge = 1.0e30;
+static const float
+tiny = 1.0e-30,
+huge = 1.0e30;
 
 float tanhf(float x)
 {
@@ -28,26 +30,26 @@ float tanhf(float x)
        /* x is INF or NaN */
        if(ix >= 0x7f800000) {
                if (jx >= 0)
-                       return one/x + one;  /* tanh(+-inf)=+-1 */
+                       return 1.0f/x + 1.0f;  /* tanh(+-inf)=+-1 */
                else
-                       return one/x - one;  /* tanh(NaN) = NaN */
+                       return 1.0f/x - 1.0f;  /* tanh(NaN) = NaN */
        }
 
        if (ix < 0x41100000) {  /* |x| < 9 */
                if (ix < 0x39800000) {  /* |x| < 2**-12 */
                        /* tanh(tiny) = tiny with inexact */
-                       if (huge+x > one)
+                       if (huge+x > 1.0f)
                                return x;
                }
                if (ix >= 0x3f800000) {  /* |x|>=1  */
-                       t = expm1f(two*fabsf(x));
-                       z = one - two/(t+two);
+                       t = expm1f(2.0f*fabsf(x));
+                       z = 1.0f - 2.0f/(t+2.0f);
                } else {
-                       t = expm1f(-two*fabsf(x));
-                       z = -t/(t+two);
+                       t = expm1f(-2.0f*fabsf(x));
+                       z = -t/(t+2.0f);
                }
        } else {  /* |x| >= 9, return +-1 */
-               z = one - tiny;  /* raise inexact */
+               z = 1.0f - tiny;  /* raise inexact */
        }
        return jx >= 0 ? z : -z;
 }