[fusl] clang-format fusl

fusl/src/math/tanh.c

 #include "libm.h"
 
 /* tanh(x) = (exp(x) - exp(-x))/(exp(x) + exp(-x))
  *         = (exp(2*x) - 1)/(exp(2*x) - 1 + 2)
  *         = (1 - exp(-2*x))/(exp(-2*x) - 1 + 2)
  */
-double tanh(double x)
-{
-        union {double f; uint64_t i;} u = {.f = x};
-        uint32_t w;
-        int sign;
-        double_t t;
+double tanh(double x) {
+  union {
+    double f;
+    uint64_t i;
+  } u = {.f = x};
+  uint32_t w;
+  int sign;
+  double_t t;
 
-        /* x = |x| */
-        sign = u.i >> 63;
-        u.i &= (uint64_t)-1/2;
-        x = u.f;
-        w = u.i >> 32;
+  /* x = |x| */
+  sign = u.i >> 63;
+  u.i &= (uint64_t)-1 / 2;
+  x = u.f;
+  w = u.i >> 32;
 
-        if (w > 0x3fe193ea) {
-                /* |x| > log(3)/2 ~= 0.5493 or nan */
-                if (w > 0x40340000) {
-                        /* |x| > 20 or nan */
-                        /* note: this branch avoids raising overflow */
-                        t = 1 - 0/x;
-                } else {
-                        t = expm1(2*x);
-                        t = 1 - 2/(t+2);
-                }
-        } else if (w > 0x3fd058ae) {
-                /* |x| > log(5/3)/2 ~= 0.2554 */
-                t = expm1(2*x);
-                t = t/(t+2);
-        } else if (w >= 0x00100000) {
-                /* |x| >= 0x1p-1022, up to 2ulp error in [0.1,0.2554] */
-                t = expm1(-2*x);
-                t = -t/(t+2);
-        } else {
-                /* |x| is subnormal */
-                /* note: the branch above would not raise underflow in [0x1p-1023,0x1p-1022) */
-                FORCE_EVAL((float)x);
-                t = x;
-        }
-        return sign ? -t : t;
+  if (w > 0x3fe193ea) {
+    /* |x| > log(3)/2 ~= 0.5493 or nan */
+    if (w > 0x40340000) {
+      /* |x| > 20 or nan */
+      /* note: this branch avoids raising overflow */
+      t = 1 - 0 / x;
+    } else {
+      t = expm1(2 * x);
+      t = 1 - 2 / (t + 2);
+    }
+  } else if (w > 0x3fd058ae) {
+    /* |x| > log(5/3)/2 ~= 0.2554 */
+    t = expm1(2 * x);
+    t = t / (t + 2);
+  } else if (w >= 0x00100000) {
+    /* |x| >= 0x1p-1022, up to 2ulp error in [0.1,0.2554] */
+    t = expm1(-2 * x);
+    t = -t / (t + 2);
+  } else {
+    /* |x| is subnormal */
+    /* note: the branch above would not raise underflow in [0x1p-1023,0x1p-1022)
+     */
+    FORCE_EVAL((float)x);
+    t = x;
+  }
+  return sign ? -t : t;
 }