[fusl] clang-format fusl

fusl/src/math/atanh.c

 #include "libm.h"
 
 /* atanh(x) = log((1+x)/(1-x))/2 = log1p(2x/(1-x))/2 ~= x + x^3/3 + o(x^5) */
-double atanh(double x)
-{
-        union {double f; uint64_t i;} u = {.f = x};
-        unsigned e = u.i >> 52 & 0x7ff;
-        unsigned s = u.i >> 63;
-        double_t y;
+double atanh(double x) {
+  union {
+    double f;
+    uint64_t i;
+  } u = {.f = x};
+  unsigned e = u.i >> 52 & 0x7ff;
+  unsigned s = u.i >> 63;
+  double_t y;
 
-        /* |x| */
-        u.i &= (uint64_t)-1/2;
-        y = u.f;
+  /* |x| */
+  u.i &= (uint64_t)-1 / 2;
+  y = u.f;
 
-        if (e < 0x3ff - 1) {
-                if (e < 0x3ff - 32) {
-                        /* handle underflow */
-                        if (e == 0)
-                                FORCE_EVAL((float)y);
-                } else {
-                        /* |x| < 0.5, up to 1.7ulp error */
-                        y = 0.5*log1p(2*y + 2*y*y/(1-y));
-                }
-        } else {
-                /* avoid overflow */
-                y = 0.5*log1p(2*(y/(1-y)));
-        }
-        return s ? -y : y;
+  if (e < 0x3ff - 1) {
+    if (e < 0x3ff - 32) {
+      /* handle underflow */
+      if (e == 0)
+        FORCE_EVAL((float)y);
+    } else {
+      /* |x| < 0.5, up to 1.7ulp error */
+      y = 0.5 * log1p(2 * y + 2 * y * y / (1 - y));
+    }
+  } else {
+    /* avoid overflow */
+    y = 0.5 * log1p(2 * (y / (1 - y)));
+  }
+  return s ? -y : y;
 }