[fusl] clang-format fusl

fusl/src/math/log10.c

 /* origin: FreeBSD /usr/src/lib/msun/src/e_log10.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.
  * ====================================================
  */
 /*
  * Return the base 10 logarithm of x.  See log.c for most comments.
  *
  * Reduce x to 2^k (1+f) and calculate r = log(1+f) - f + f*f/2
  * as in log.c, then combine and scale in extra precision:
  *    log10(x) = (f - f*f/2 + r)/log(10) + k*log10(2)
  */
 
 #include <math.h>
 #include <stdint.h>
 
-static const double
-ivln10hi  = 4.34294481878168880939e-01, /* 0x3fdbcb7b, 0x15200000 */
-ivln10lo  = 2.50829467116452752298e-11, /* 0x3dbb9438, 0xca9aadd5 */
-log10_2hi = 3.01029995663611771306e-01, /* 0x3FD34413, 0x509F6000 */
-log10_2lo = 3.69423907715893078616e-13, /* 0x3D59FEF3, 0x11F12B36 */
-Lg1 = 6.666666666666735130e-01,  /* 3FE55555 55555593 */
-Lg2 = 3.999999999940941908e-01,  /* 3FD99999 9997FA04 */
-Lg3 = 2.857142874366239149e-01,  /* 3FD24924 94229359 */
-Lg4 = 2.222219843214978396e-01,  /* 3FCC71C5 1D8E78AF */
-Lg5 = 1.818357216161805012e-01,  /* 3FC74664 96CB03DE */
-Lg6 = 1.531383769920937332e-01,  /* 3FC39A09 D078C69F */
-Lg7 = 1.479819860511658591e-01;  /* 3FC2F112 DF3E5244 */
+static const double ivln10hi =
+                        4.34294481878168880939e-01, /* 0x3fdbcb7b, 0x15200000 */
+    ivln10lo = 2.50829467116452752298e-11,          /* 0x3dbb9438, 0xca9aadd5 */
+    log10_2hi = 3.01029995663611771306e-01,         /* 0x3FD34413, 0x509F6000 */
+    log10_2lo = 3.69423907715893078616e-13,         /* 0x3D59FEF3, 0x11F12B36 */
+    Lg1 = 6.666666666666735130e-01,                 /* 3FE55555 55555593 */
+    Lg2 = 3.999999999940941908e-01,                 /* 3FD99999 9997FA04 */
+    Lg3 = 2.857142874366239149e-01,                 /* 3FD24924 94229359 */
+    Lg4 = 2.222219843214978396e-01,                 /* 3FCC71C5 1D8E78AF */
+    Lg5 = 1.818357216161805012e-01,                 /* 3FC74664 96CB03DE */
+    Lg6 = 1.531383769920937332e-01,                 /* 3FC39A09 D078C69F */
+    Lg7 = 1.479819860511658591e-01;                 /* 3FC2F112 DF3E5244 */
 
-double log10(double x)
-{
-        union {double f; uint64_t i;} u = {x};
-        double_t hfsq,f,s,z,R,w,t1,t2,dk,y,hi,lo,val_hi,val_lo;
-        uint32_t hx;
-        int k;
+double log10(double x) {
+  union {
+    double f;
+    uint64_t i;
+  } u = {x};
+  double_t hfsq, f, s, z, R, w, t1, t2, dk, y, hi, lo, val_hi, val_lo;
+  uint32_t hx;
+  int k;
 
-        hx = u.i>>32;
-        k = 0;
-        if (hx < 0x00100000 || hx>>31) {
-                if (u.i<<1 == 0)
-                        return -1/(x*x);  /* log(+-0)=-inf */
-                if (hx>>31)
-                        return (x-x)/0.0; /* log(-#) = NaN */
-                /* subnormal number, scale x up */
-                k -= 54;
-                x *= 0x1p54;
-                u.f = x;
-                hx = u.i>>32;
-        } else if (hx >= 0x7ff00000) {
-                return x;
-        } else if (hx == 0x3ff00000 && u.i<<32 == 0)
-                return 0;
+  hx = u.i >> 32;
+  k = 0;
+  if (hx < 0x00100000 || hx >> 31) {
+    if (u.i << 1 == 0)
+      return -1 / (x * x); /* log(+-0)=-inf */
+    if (hx >> 31)
+      return (x - x) / 0.0; /* log(-#) = NaN */
+    /* subnormal number, scale x up */
+    k -= 54;
+    x *= 0x1p54;
+    u.f = x;
+    hx = u.i >> 32;
+  } else if (hx >= 0x7ff00000) {
+    return x;
+  } else if (hx == 0x3ff00000 && u.i << 32 == 0)
+    return 0;
 
-        /* reduce x into [sqrt(2)/2, sqrt(2)] */
-        hx += 0x3ff00000 - 0x3fe6a09e;
-        k += (int)(hx>>20) - 0x3ff;
-        hx = (hx&0x000fffff) + 0x3fe6a09e;
-        u.i = (uint64_t)hx<<32 | (u.i&0xffffffff);
-        x = u.f;
+  /* reduce x into [sqrt(2)/2, sqrt(2)] */
+  hx += 0x3ff00000 - 0x3fe6a09e;
+  k += (int)(hx >> 20) - 0x3ff;
+  hx = (hx & 0x000fffff) + 0x3fe6a09e;
+  u.i = (uint64_t)hx << 32 | (u.i & 0xffffffff);
+  x = u.f;
 
-        f = x - 1.0;
-        hfsq = 0.5*f*f;
-        s = f/(2.0+f);
-        z = s*s;
-        w = z*z;
-        t1 = w*(Lg2+w*(Lg4+w*Lg6));
-        t2 = z*(Lg1+w*(Lg3+w*(Lg5+w*Lg7)));
-        R = t2 + t1;
+  f = x - 1.0;
+  hfsq = 0.5 * f * f;
+  s = f / (2.0 + f);
+  z = s * s;
+  w = z * z;
+  t1 = w * (Lg2 + w * (Lg4 + w * Lg6));
+  t2 = z * (Lg1 + w * (Lg3 + w * (Lg5 + w * Lg7)));
+  R = t2 + t1;
 
-        /* See log2.c for details. */
-        /* hi+lo = f - hfsq + s*(hfsq+R) ~ log(1+f) */
-        hi = f - hfsq;
-        u.f = hi;
-        u.i &= (uint64_t)-1<<32;
-        hi = u.f;
-        lo = f - hi - hfsq + s*(hfsq+R);
+  /* See log2.c for details. */
+  /* hi+lo = f - hfsq + s*(hfsq+R) ~ log(1+f) */
+  hi = f - hfsq;
+  u.f = hi;
+  u.i &= (uint64_t)-1 << 32;
+  hi = u.f;
+  lo = f - hi - hfsq + s * (hfsq + R);
 
-        /* val_hi+val_lo ~ log10(1+f) + k*log10(2) */
-        val_hi = hi*ivln10hi;
-        dk = k;
-        y = dk*log10_2hi;
-        val_lo = dk*log10_2lo + (lo+hi)*ivln10lo + lo*ivln10hi;
+  /* val_hi+val_lo ~ log10(1+f) + k*log10(2) */
+  val_hi = hi * ivln10hi;
+  dk = k;
+  y = dk * log10_2hi;
+  val_lo = dk * log10_2lo + (lo + hi) * ivln10lo + lo * ivln10hi;
 
-        /*
-         * Extra precision in for adding y is not strictly needed
-         * since there is no very large cancellation near x = sqrt(2) or
-         * x = 1/sqrt(2), but we do it anyway since it costs little on CPUs
-         * with some parallelism and it reduces the error for many args.
-         */
-        w = y + val_hi;
-        val_lo += (y - w) + val_hi;
-        val_hi = w;
+  /*
+   * Extra precision in for adding y is not strictly needed
+   * since there is no very large cancellation near x = sqrt(2) or
+   * x = 1/sqrt(2), but we do it anyway since it costs little on CPUs
+   * with some parallelism and it reduces the error for many args.
+   */
+  w = y + val_hi;
+  val_lo += (y - w) + val_hi;
+  val_hi = w;
 
-        return val_lo + val_hi;
+  return val_lo + val_hi;
 }