[fusl] clang-format fusl

fusl/src/math/expm1.c

 /* origin: FreeBSD /usr/src/lib/msun/src/s_expm1.c */
 /*
  * ====================================================
  * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
  *
  * Developed at SunPro, a Sun Microsystems, Inc. business.
  * Permission to use, copy, modify, and distribute this
  * software is freely granted, provided that this notice
  * is preserved.
  * ====================================================
@@ skipping 88 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
-o_threshold = 7.09782712893383973096e+02, /* 0x40862E42, 0xFEFA39EF */
-ln2_hi      = 6.93147180369123816490e-01, /* 0x3fe62e42, 0xfee00000 */
-ln2_lo      = 1.90821492927058770002e-10, /* 0x3dea39ef, 0x35793c76 */
-invln2      = 1.44269504088896338700e+00, /* 0x3ff71547, 0x652b82fe */
-/* Scaled Q's: Qn_here = 2**n * Qn_above, for R(2*z) where z = hxs = x*x/2: */
-Q1 = -3.33333333333331316428e-02, /* BFA11111 111110F4 */
-Q2 =  1.58730158725481460165e-03, /* 3F5A01A0 19FE5585 */
-Q3 = -7.93650757867487942473e-05, /* BF14CE19 9EAADBB7 */
-Q4 =  4.00821782732936239552e-06, /* 3ED0CFCA 86E65239 */
-Q5 = -2.01099218183624371326e-07; /* BE8AFDB7 6E09C32D */
+static const double o_threshold =
+                        7.09782712893383973096e+02, /* 0x40862E42, 0xFEFA39EF */
+    ln2_hi = 6.93147180369123816490e-01,            /* 0x3fe62e42, 0xfee00000 */
+    ln2_lo = 1.90821492927058770002e-10,            /* 0x3dea39ef, 0x35793c76 */
+    invln2 = 1.44269504088896338700e+00,            /* 0x3ff71547, 0x652b82fe */
+    /* Scaled Q's: Qn_here = 2**n * Qn_above, for R(2*z) where z = hxs = x*x/2:
+       */
+    Q1 = -3.33333333333331316428e-02, /* BFA11111 111110F4 */
+    Q2 = 1.58730158725481460165e-03,  /* 3F5A01A0 19FE5585 */
+    Q3 = -7.93650757867487942473e-05, /* BF14CE19 9EAADBB7 */
+    Q4 = 4.00821782732936239552e-06,  /* 3ED0CFCA 86E65239 */
+    Q5 = -2.01099218183624371326e-07; /* BE8AFDB7 6E09C32D */
 
-double expm1(double x)
-{
-        double_t y,hi,lo,c,t,e,hxs,hfx,r1,twopk;
-        union {double f; uint64_t i;} u = {x};
-        uint32_t hx = u.i>>32 & 0x7fffffff;
-        int k, sign = u.i>>63;
+double expm1(double x) {
+  double_t y, hi, lo, c, t, e, hxs, hfx, r1, twopk;
+  union {
+    double f;
+    uint64_t i;
+  } u = {x};
+  uint32_t hx = u.i >> 32 & 0x7fffffff;
+  int k, sign = u.i >> 63;
 
-        /* filter out huge and non-finite argument */
-        if (hx >= 0x4043687A) {  /* if |x|>=56*ln2 */
-                if (isnan(x))
-                        return x;
-                if (sign)
-                        return -1;
-                if (x > o_threshold) {
-                        x *= 0x1p1023;
-                        return x;
-                }
-        }
+  /* filter out huge and non-finite argument */
+  if (hx >= 0x4043687A) { /* if |x|>=56*ln2 */
+    if (isnan(x))
+      return x;
+    if (sign)
+      return -1;
+    if (x > o_threshold) {
+      x *= 0x1p1023;
+      return x;
+    }
+  }
 
-        /* argument reduction */
-        if (hx > 0x3fd62e42) {  /* if  |x| > 0.5 ln2 */
-                if (hx < 0x3FF0A2B2) {  /* and |x| < 1.5 ln2 */
-                        if (!sign) {
-                                hi = x - ln2_hi;
-                                lo = ln2_lo;
-                                k =  1;
-                        } else {
-                                hi = x + ln2_hi;
-                                lo = -ln2_lo;
-                                k = -1;
-                        }
-                } else {
-                        k  = invln2*x + (sign ? -0.5 : 0.5);
-                        t  = k;
-                        hi = x - t*ln2_hi;  /* t*ln2_hi is exact here */
-                        lo = t*ln2_lo;
-                }
-                x = hi-lo;
-                c = (hi-x)-lo;
-        } else if (hx < 0x3c900000) {  /* |x| < 2**-54, return x */
-                if (hx < 0x00100000)
-                        FORCE_EVAL((float)x);
-                return x;
-        } else
-                k = 0;
+  /* argument reduction */
+  if (hx > 0x3fd62e42) {   /* if  |x| > 0.5 ln2 */
+    if (hx < 0x3FF0A2B2) { /* and |x| < 1.5 ln2 */
+      if (!sign) {
+        hi = x - ln2_hi;
+        lo = ln2_lo;
+        k = 1;
+      } else {
+        hi = x + ln2_hi;
+        lo = -ln2_lo;
+        k = -1;
+      }
+    } else {
+      k = invln2 * x + (sign ? -0.5 : 0.5);
+      t = k;
+      hi = x - t * ln2_hi; /* t*ln2_hi is exact here */
+      lo = t * ln2_lo;
+    }
+    x = hi - lo;
+    c = (hi - x) - lo;
+  } else if (hx < 0x3c900000) { /* |x| < 2**-54, return x */
+    if (hx < 0x00100000)
+      FORCE_EVAL((float)x);
+    return x;
+  } else
+    k = 0;
 
-        /* x is now in primary range */
-        hfx = 0.5*x;
-        hxs = x*hfx;
-        r1 = 1.0+hxs*(Q1+hxs*(Q2+hxs*(Q3+hxs*(Q4+hxs*Q5))));
-        t  = 3.0-r1*hfx;
-        e  = hxs*((r1-t)/(6.0 - x*t));
-        if (k == 0)   /* c is 0 */
-                return x - (x*e-hxs);
-        e  = x*(e-c) - c;
-        e -= hxs;
-        /* exp(x) ~ 2^k (x_reduced - e + 1) */
-        if (k == -1)
-                return 0.5*(x-e) - 0.5;
-        if (k == 1) {
-                if (x < -0.25)
-                        return -2.0*(e-(x+0.5));
-                return 1.0+2.0*(x-e);
-        }
-        u.i = (uint64_t)(0x3ff + k)<<52;  /* 2^k */
-        twopk = u.f;
-        if (k < 0 || k > 56) {  /* suffice to return exp(x)-1 */
-                y = x - e + 1.0;
-                if (k == 1024)
-                        y = y*2.0*0x1p1023;
-                else
-                        y = y*twopk;
-                return y - 1.0;
-        }
-        u.i = (uint64_t)(0x3ff - k)<<52;  /* 2^-k */
-        if (k < 20)
-                y = (x-e+(1-u.f))*twopk;
-        else
-                y = (x-(e+u.f)+1)*twopk;
-        return y;
+  /* x is now in primary range */
+  hfx = 0.5 * x;
+  hxs = x * hfx;
+  r1 = 1.0 + hxs * (Q1 + hxs * (Q2 + hxs * (Q3 + hxs * (Q4 + hxs * Q5))));
+  t = 3.0 - r1 * hfx;
+  e = hxs * ((r1 - t) / (6.0 - x * t));
+  if (k == 0) /* c is 0 */
+    return x - (x * e - hxs);
+  e = x * (e - c) - c;
+  e -= hxs;
+  /* exp(x) ~ 2^k (x_reduced - e + 1) */
+  if (k == -1)
+    return 0.5 * (x - e) - 0.5;
+  if (k == 1) {
+    if (x < -0.25)
+      return -2.0 * (e - (x + 0.5));
+    return 1.0 + 2.0 * (x - e);
+  }
+  u.i = (uint64_t)(0x3ff + k) << 52; /* 2^k */
+  twopk = u.f;
+  if (k < 0 || k > 56) { /* suffice to return exp(x)-1 */
+    y = x - e + 1.0;
+    if (k == 1024)
+      y = y * 2.0 * 0x1p1023;
+    else
+      y = y * twopk;
+    return y - 1.0;
+  }
+  u.i = (uint64_t)(0x3ff - k) << 52; /* 2^-k */
+  if (k < 20)
+    y = (x - e + (1 - u.f)) * twopk;
+  else
+    y = (x - (e + u.f) + 1) * twopk;
+  return y;
 }