[fusl] clang-format fusl

fusl/src/math/tgammal.c

 /* origin: OpenBSD /usr/src/lib/libm/src/ld80/e_tgammal.c */
 /*
  * Copyright (c) 2008 Stephen L. Moshier <steve@moshier.net>
  *
  * Permission to use, copy, modify, and distribute this software for any
  * purpose with or without fee is hereby granted, provided that the above
  * copyright notice and this permission notice appear in all copies.
  *
  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
@@ skipping 33 matching lines @@
  *    IEEE     -40,+40      10000       3.6e-19     7.9e-20
  *    IEEE    -1755,+1755   10000       4.8e-18     6.5e-19
  *
  * Accuracy for large arguments is dominated by error in powl().
  *
  */
 
 #include "libm.h"
 
 #if LDBL_MANT_DIG == 53 && LDBL_MAX_EXP == 1024
-long double tgammal(long double x)
-{
-        return tgamma(x);
+long double tgammal(long double x) {
+  return tgamma(x);
 }
 #elif LDBL_MANT_DIG == 64 && LDBL_MAX_EXP == 16384
 /*
 tgamma(x+2) = tgamma(x+2) P(x)/Q(x)
 0 <= x <= 1
 Relative error
 n=7, d=8
 Peak error =  1.83e-20
 Relative error spread =  8.4e-23
 */
 static const long double P[8] = {
- 4.212760487471622013093E-5L,
- 4.542931960608009155600E-4L,
- 4.092666828394035500949E-3L,
- 2.385363243461108252554E-2L,
- 1.113062816019361559013E-1L,
- 3.629515436640239168939E-1L,
- 8.378004301573126728826E-1L,
- 1.000000000000000000009E0L,
+    4.212760487471622013093E-5L, 4.542931960608009155600E-4L,
+    4.092666828394035500949E-3L, 2.385363243461108252554E-2L,
+    1.113062816019361559013E-1L, 3.629515436640239168939E-1L,
+    8.378004301573126728826E-1L, 1.000000000000000000009E0L,
 };
 static const long double Q[9] = {
--1.397148517476170440917E-5L,
- 2.346584059160635244282E-4L,
--1.237799246653152231188E-3L,
--7.955933682494738320586E-4L,
- 2.773706565840072979165E-2L,
--4.633887671244534213831E-2L,
--2.243510905670329164562E-1L,
- 4.150160950588455434583E-1L,
- 9.999999999999999999908E-1L,
+    -1.397148517476170440917E-5L, 2.346584059160635244282E-4L,
+    -1.237799246653152231188E-3L, -7.955933682494738320586E-4L,
+    2.773706565840072979165E-2L,  -4.633887671244534213831E-2L,
+    -2.243510905670329164562E-1L, 4.150160950588455434583E-1L,
+    9.999999999999999999908E-1L,
 };
 
 /*
 static const long double P[] = {
 -3.01525602666895735709e0L,
 -3.25157411956062339893e1L,
 -2.92929976820724030353e2L,
 -1.70730828800510297666e3L,
 -7.96667499622741999770e3L,
 -2.59780216007146401957e4L,
@@ skipping 18 matching lines @@
 /* Stirling's formula for the gamma function
 tgamma(x) = sqrt(2 pi) x^(x-.5) exp(-x) (1 + 1/x P(1/x))
 z(x) = x
 13 <= x <= 1024
 Relative error
 n=8, d=0
 Peak error =  9.44e-21
 Relative error spread =  8.8e-4
 */
 static const long double STIR[9] = {
- 7.147391378143610789273E-4L,
--2.363848809501759061727E-5L,
--5.950237554056330156018E-4L,
- 6.989332260623193171870E-5L,
- 7.840334842744753003862E-4L,
--2.294719747873185405699E-4L,
--2.681327161876304418288E-3L,
- 3.472222222230075327854E-3L,
- 8.333333333333331800504E-2L,
+    7.147391378143610789273E-4L,  -2.363848809501759061727E-5L,
+    -5.950237554056330156018E-4L, 6.989332260623193171870E-5L,
+    7.840334842744753003862E-4L,  -2.294719747873185405699E-4L,
+    -2.681327161876304418288E-3L, 3.472222222230075327854E-3L,
+    8.333333333333331800504E-2L,
 };
 
 #define MAXSTIR 1024.0L
 static const long double SQTPI = 2.50662827463100050242E0L;
 
 /* 1/tgamma(x) = z P(z)
  * z(x) = 1/x
  * 0 < x < 0.03125
  * Peak relative error 4.2e-23
  */
 static const long double S[9] = {
--1.193945051381510095614E-3L,
- 7.220599478036909672331E-3L,
--9.622023360406271645744E-3L,
--4.219773360705915470089E-2L,
- 1.665386113720805206758E-1L,
--4.200263503403344054473E-2L,
--6.558780715202540684668E-1L,
- 5.772156649015328608253E-1L,
- 1.000000000000000000000E0L,
+    -1.193945051381510095614E-3L, 7.220599478036909672331E-3L,
+    -9.622023360406271645744E-3L, -4.219773360705915470089E-2L,
+    1.665386113720805206758E-1L,  -4.200263503403344054473E-2L,
+    -6.558780715202540684668E-1L, 5.772156649015328608253E-1L,
+    1.000000000000000000000E0L,
 };
 
 /* 1/tgamma(-x) = z P(z)
  * z(x) = 1/x
  * 0 < x < 0.03125
  * Peak relative error 5.16e-23
  * Relative error spread =  2.5e-24
  */
 static const long double SN[9] = {
- 1.133374167243894382010E-3L,
- 7.220837261893170325704E-3L,
- 9.621911155035976733706E-3L,
--4.219773343731191721664E-2L,
--1.665386113944413519335E-1L,
--4.200263503402112910504E-2L,
- 6.558780715202536547116E-1L,
- 5.772156649015328608727E-1L,
--1.000000000000000000000E0L,
+    1.133374167243894382010E-3L,  7.220837261893170325704E-3L,
+    9.621911155035976733706E-3L,  -4.219773343731191721664E-2L,
+    -1.665386113944413519335E-1L, -4.200263503402112910504E-2L,
+    6.558780715202536547116E-1L,  5.772156649015328608727E-1L,
+    -1.000000000000000000000E0L,
 };
 
 static const long double PIL = 3.1415926535897932384626L;
 
 /* Gamma function computed by Stirling's formula.
  */
-static long double stirf(long double x)
-{
-        long double y, w, v;
+static long double stirf(long double x) {
+  long double y, w, v;
 
-        w = 1.0/x;
-        /* For large x, use rational coefficients from the analytical expansion.  */
-        if (x > 1024.0)
-                w = (((((6.97281375836585777429E-5L * w
-                 + 7.84039221720066627474E-4L) * w
-                 - 2.29472093621399176955E-4L) * w
-                 - 2.68132716049382716049E-3L) * w
-                 + 3.47222222222222222222E-3L) * w
-                 + 8.33333333333333333333E-2L) * w
-                 + 1.0;
-        else
-                w = 1.0 + w * __polevll(w, STIR, 8);
-        y = expl(x);
-        if (x > MAXSTIR) { /* Avoid overflow in pow() */
-                v = powl(x, 0.5L * x - 0.25L);
-                y = v * (v / y);
-        } else {
-                y = powl(x, x - 0.5L) / y;
-        }
-        y = SQTPI * y * w;
-        return y;
+  w = 1.0 / x;
+  /* For large x, use rational coefficients from the analytical expansion.  */
+  if (x > 1024.0)
+    w = (((((6.97281375836585777429E-5L * w + 7.84039221720066627474E-4L) * w -
+            2.29472093621399176955E-4L) *
+               w -
+           2.68132716049382716049E-3L) *
+              w +
+          3.47222222222222222222E-3L) *
+             w +
+         8.33333333333333333333E-2L) *
+            w +
+        1.0;
+  else
+    w = 1.0 + w * __polevll(w, STIR, 8);
+  y = expl(x);
+  if (x > MAXSTIR) { /* Avoid overflow in pow() */
+    v = powl(x, 0.5L * x - 0.25L);
+    y = v * (v / y);
+  } else {
+    y = powl(x, x - 0.5L) / y;
+  }
+  y = SQTPI * y * w;
+  return y;
 }
 
-long double tgammal(long double x)
-{
-        long double p, q, z;
+long double tgammal(long double x) {
+  long double p, q, z;
 
-        if (!isfinite(x))
-                return x + INFINITY;
+  if (!isfinite(x))
+    return x + INFINITY;
 
-        q = fabsl(x);
-        if (q > 13.0) {
-                if (x < 0.0) {
-                        p = floorl(q);
-                        z = q - p;
-                        if (z == 0)
-                                return 0 / z;
-                        if (q > MAXGAML) {
-                                z = 0;
-                        } else {
-                                if (z > 0.5) {
-                                        p += 1.0;
-                                        z = q - p;
-                                }
-                                z = q * sinl(PIL * z);
-                                z = fabsl(z) * stirf(q);
-                                z = PIL/z;
-                        }
-                        if (0.5 * p == floorl(q * 0.5))
-                                z = -z;
-                } else if (x > MAXGAML) {
-                        z = x * 0x1p16383L;
-                } else {
-                        z = stirf(x);
-                }
-                return z;
-        }
+  q = fabsl(x);
+  if (q > 13.0) {
+    if (x < 0.0) {
+      p = floorl(q);
+      z = q - p;
+      if (z == 0)
+        return 0 / z;
+      if (q > MAXGAML) {
+        z = 0;
+      } else {
+        if (z > 0.5) {
+          p += 1.0;
+          z = q - p;
+        }
+        z = q * sinl(PIL * z);
+        z = fabsl(z) * stirf(q);
+        z = PIL / z;
+      }
+      if (0.5 * p == floorl(q * 0.5))
+        z = -z;
+    } else if (x > MAXGAML) {
+      z = x * 0x1p16383L;
+    } else {
+      z = stirf(x);
+    }
+    return z;
+  }
 
-        z = 1.0;
-        while (x >= 3.0) {
-                x -= 1.0;
-                z *= x;
-        }
-        while (x < -0.03125L) {
-                z /= x;
-                x += 1.0;
-        }
-        if (x <= 0.03125L)
-                goto small;
-        while (x < 2.0) {
-                z /= x;
-                x += 1.0;
-        }
-        if (x == 2.0)
-                return z;
+  z = 1.0;
+  while (x >= 3.0) {
+    x -= 1.0;
+    z *= x;
+  }
+  while (x < -0.03125L) {
+    z /= x;
+    x += 1.0;
+  }
+  if (x <= 0.03125L)
+    goto small;
+  while (x < 2.0) {
+    z /= x;
+    x += 1.0;
+  }
+  if (x == 2.0)
+    return z;
 
-        x -= 2.0;
-        p = __polevll(x, P, 7);
-        q = __polevll(x, Q, 8);
-        z = z * p / q;
-        return z;
+  x -= 2.0;
+  p = __polevll(x, P, 7);
+  q = __polevll(x, Q, 8);
+  z = z * p / q;
+  return z;
 
 small:
-        /* z==1 if x was originally +-0 */
-        if (x == 0 && z != 1)
-                return x / x;
-        if (x < 0.0) {
-                x = -x;
-                q = z / (x * __polevll(x, SN, 8));
-        } else
-                q = z / (x * __polevll(x, S, 8));
-        return q;
+  /* z==1 if x was originally +-0 */
+  if (x == 0 && z != 1)
+    return x / x;
+  if (x < 0.0) {
+    x = -x;
+    q = z / (x * __polevll(x, SN, 8));
+  } else
+    q = z / (x * __polevll(x, S, 8));
+  return q;
 }
 #elif LDBL_MANT_DIG == 113 && LDBL_MAX_EXP == 16384
 // TODO: broken implementation to make things compile
-long double tgammal(long double x)
-{
-        return tgamma(x);
+long double tgammal(long double x) {
+  return tgamma(x);
 }
 #endif