[fusl] clang-format fusl

fusl/src/math/atan2.c

 /* origin: FreeBSD /usr/src/lib/msun/src/e_atan2.c */
 /*
  * ====================================================
  * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
  *
  * Developed at SunSoft, a Sun Microsystems, Inc. business.
  * Permission to use, copy, modify, and distribute this
  * software is freely granted, provided that this notice
  * is preserved.
  * ====================================================
@@ skipping 21 matching lines @@
  *
  * Constants:
  * The hexadecimal values are the intended ones for the following
  * constants. The decimal values may be used, provided that the
  * compiler will convert from decimal to binary accurately enough
  * to produce the hexadecimal values shown.
  */
 
 #include "libm.h"
 
-static const double
-pi     = 3.1415926535897931160E+00, /* 0x400921FB, 0x54442D18 */
-pi_lo  = 1.2246467991473531772E-16; /* 0x3CA1A626, 0x33145C07 */
+static const double pi = 3.1415926535897931160E+00, /* 0x400921FB, 0x54442D18 */
+    pi_lo = 1.2246467991473531772E-16;              /* 0x3CA1A626, 0x33145C07 */
 
-double atan2(double y, double x)
-{
-        double z;
-        uint32_t m,lx,ly,ix,iy;
+double atan2(double y, double x) {
+  double z;
+  uint32_t m, lx, ly, ix, iy;
 
-        if (isnan(x) || isnan(y))
-                return x+y;
-        EXTRACT_WORDS(ix, lx, x);
-        EXTRACT_WORDS(iy, ly, y);
-        if ((ix-0x3ff00000 | lx) == 0)  /* x = 1.0 */
-                return atan(y);
-        m = ((iy>>31)&1) | ((ix>>30)&2);  /* 2*sign(x)+sign(y) */
-        ix = ix & 0x7fffffff;
-        iy = iy & 0x7fffffff;
+  if (isnan(x) || isnan(y))
+    return x + y;
+  EXTRACT_WORDS(ix, lx, x);
+  EXTRACT_WORDS(iy, ly, y);
+  if ((ix - 0x3ff00000 | lx) == 0) /* x = 1.0 */
+    return atan(y);
+  m = ((iy >> 31) & 1) | ((ix >> 30) & 2); /* 2*sign(x)+sign(y) */
+  ix = ix & 0x7fffffff;
+  iy = iy & 0x7fffffff;
 
-        /* when y = 0 */
-        if ((iy|ly) == 0) {
-                switch(m) {
-                case 0:
-                case 1: return y;   /* atan(+-0,+anything)=+-0 */
-                case 2: return  pi; /* atan(+0,-anything) = pi */
-                case 3: return -pi; /* atan(-0,-anything) =-pi */
-                }
-        }
-        /* when x = 0 */
-        if ((ix|lx) == 0)
-                return m&1 ? -pi/2 : pi/2;
-        /* when x is INF */
-        if (ix == 0x7ff00000) {
-                if (iy == 0x7ff00000) {
-                        switch(m) {
-                        case 0: return  pi/4;   /* atan(+INF,+INF) */
-                        case 1: return -pi/4;   /* atan(-INF,+INF) */
-                        case 2: return  3*pi/4; /* atan(+INF,-INF) */
-                        case 3: return -3*pi/4; /* atan(-INF,-INF) */
-                        }
-                } else {
-                        switch(m) {
-                        case 0: return  0.0; /* atan(+...,+INF) */
-                        case 1: return -0.0; /* atan(-...,+INF) */
-                        case 2: return  pi;  /* atan(+...,-INF) */
-                        case 3: return -pi;  /* atan(-...,-INF) */
-                        }
-                }
-        }
-        /* |y/x| > 0x1p64 */
-        if (ix+(64<<20) < iy || iy == 0x7ff00000)
-                return m&1 ? -pi/2 : pi/2;
+  /* when y = 0 */
+  if ((iy | ly) == 0) {
+    switch (m) {
+      case 0:
+      case 1:
+        return y; /* atan(+-0,+anything)=+-0 */
+      case 2:
+        return pi; /* atan(+0,-anything) = pi */
+      case 3:
+        return -pi; /* atan(-0,-anything) =-pi */
+    }
+  }
+  /* when x = 0 */
+  if ((ix | lx) == 0)
+    return m & 1 ? -pi / 2 : pi / 2;
+  /* when x is INF */
+  if (ix == 0x7ff00000) {
+    if (iy == 0x7ff00000) {
+      switch (m) {
+        case 0:
+          return pi / 4; /* atan(+INF,+INF) */
+        case 1:
+          return -pi / 4; /* atan(-INF,+INF) */
+        case 2:
+          return 3 * pi / 4; /* atan(+INF,-INF) */
+        case 3:
+          return -3 * pi / 4; /* atan(-INF,-INF) */
+      }
+    } else {
+      switch (m) {
+        case 0:
+          return 0.0; /* atan(+...,+INF) */
+        case 1:
+          return -0.0; /* atan(-...,+INF) */
+        case 2:
+          return pi; /* atan(+...,-INF) */
+        case 3:
+          return -pi; /* atan(-...,-INF) */
+      }
+    }
+  }
+  /* |y/x| > 0x1p64 */
+  if (ix + (64 << 20) < iy || iy == 0x7ff00000)
+    return m & 1 ? -pi / 2 : pi / 2;
 
-        /* z = atan(|y/x|) without spurious underflow */
-        if ((m&2) && iy+(64<<20) < ix)  /* |y/x| < 0x1p-64, x<0 */
-                z = 0;
-        else
-                z = atan(fabs(y/x));
-        switch (m) {
-        case 0: return z;              /* atan(+,+) */
-        case 1: return -z;             /* atan(-,+) */
-        case 2: return pi - (z-pi_lo); /* atan(+,-) */
-        default: /* case 3 */
-                return (z-pi_lo) - pi; /* atan(-,-) */
-        }
+  /* z = atan(|y/x|) without spurious underflow */
+  if ((m & 2) && iy + (64 << 20) < ix) /* |y/x| < 0x1p-64, x<0 */
+    z = 0;
+  else
+    z = atan(fabs(y / x));
+  switch (m) {
+    case 0:
+      return z; /* atan(+,+) */
+    case 1:
+      return -z; /* atan(-,+) */
+    case 2:
+      return pi - (z - pi_lo); /* atan(+,-) */
+    default:                   /* case 3 */
+      return (z - pi_lo) - pi; /* atan(-,-) */
+  }
 }