mkostemp: fix implementation

[uclinux-h8/uClibc.git] / libm / e_rem_pio2.c

diff --git a/libm/e_rem_pio2.c b/libm/e_rem_pio2.c
index e98c699..3bbcd00 100644 (file)
--- a/libm/e_rem_pio2.c
+++ b/libm/e_rem_pio2.c
@@ -1,22 +1,17 @@
-/* @(#)e_rem_pio2.c 5.1 93/09/24 */
 /*
  * ====================================================
  * 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 
+ * software is freely granted, provided that this notice
  * is preserved.
  * ====================================================
  */
 
-#if defined(LIBM_SCCS) && !defined(lint)
-static char rcsid[] = "$NetBSD: e_rem_pio2.c,v 1.8 1995/05/10 20:46:02 jtc Exp $";
-#endif
-
 /* __ieee754_rem_pio2(x,y)
- * 
- * return the remainder of x rem pi/2 in y[0]+y[1] 
+ *
+ * return the remainder of x rem pi/2 in y[0]+y[1]
  * use __kernel_rem_pio2()
  */
 
@@ -24,31 +19,23 @@ static char rcsid[] = "$NetBSD: e_rem_pio2.c,v 1.8 1995/05/10 20:46:02 jtc Exp $
 #include "math_private.h"
 
 /*
- * Table of constants for 2/pi, 396 Hex digits (476 decimal) of 2/pi 
+ * Table of constants for 2/pi, 396 Hex digits (476 decimal) of 2/pi
  */
-#ifdef __STDC__
 static const int32_t two_over_pi[] = {
-#else
-static int32_t two_over_pi[] = {
-#endif
-0xA2F983, 0x6E4E44, 0x1529FC, 0x2757D1, 0xF534DD, 0xC0DB62, 
-0x95993C, 0x439041, 0xFE5163, 0xABDEBB, 0xC561B7, 0x246E3A, 
-0x424DD2, 0xE00649, 0x2EEA09, 0xD1921C, 0xFE1DEB, 0x1CB129, 
-0xA73EE8, 0x8235F5, 0x2EBB44, 0x84E99C, 0x7026B4, 0x5F7E41, 
-0x3991D6, 0x398353, 0x39F49C, 0x845F8B, 0xBDF928, 0x3B1FF8, 
-0x97FFDE, 0x05980F, 0xEF2F11, 0x8B5A0A, 0x6D1F6D, 0x367ECF, 
-0x27CB09, 0xB74F46, 0x3F669E, 0x5FEA2D, 0x7527BA, 0xC7EBE5, 
-0xF17B3D, 0x0739F7, 0x8A5292, 0xEA6BFB, 0x5FB11F, 0x8D5D08, 
-0x560330, 0x46FC7B, 0x6BABF0, 0xCFBC20, 0x9AF436, 0x1DA9E3, 
-0x91615E, 0xE61B08, 0x659985, 0x5F14A0, 0x68408D, 0xFFD880, 
-0x4D7327, 0x310606, 0x1556CA, 0x73A8C9, 0x60E27B, 0xC08C6B, 
+0xA2F983, 0x6E4E44, 0x1529FC, 0x2757D1, 0xF534DD, 0xC0DB62,
+0x95993C, 0x439041, 0xFE5163, 0xABDEBB, 0xC561B7, 0x246E3A,
+0x424DD2, 0xE00649, 0x2EEA09, 0xD1921C, 0xFE1DEB, 0x1CB129,
+0xA73EE8, 0x8235F5, 0x2EBB44, 0x84E99C, 0x7026B4, 0x5F7E41,
+0x3991D6, 0x398353, 0x39F49C, 0x845F8B, 0xBDF928, 0x3B1FF8,
+0x97FFDE, 0x05980F, 0xEF2F11, 0x8B5A0A, 0x6D1F6D, 0x367ECF,
+0x27CB09, 0xB74F46, 0x3F669E, 0x5FEA2D, 0x7527BA, 0xC7EBE5,
+0xF17B3D, 0x0739F7, 0x8A5292, 0xEA6BFB, 0x5FB11F, 0x8D5D08,
+0x560330, 0x46FC7B, 0x6BABF0, 0xCFBC20, 0x9AF436, 0x1DA9E3,
+0x91615E, 0xE61B08, 0x659985, 0x5F14A0, 0x68408D, 0xFFD880,
+0x4D7327, 0x310606, 0x1556CA, 0x73A8C9, 0x60E27B, 0xC08C6B,
 };
 
-#ifdef __STDC__
 static const int32_t npio2_hw[] = {
-#else
-static int32_t npio2_hw[] = {
-#endif
 0x3FF921FB, 0x400921FB, 0x4012D97C, 0x401921FB, 0x401F6A7A, 0x4022D97C,
 0x4025FDBB, 0x402921FB, 0x402C463A, 0x402F6A7A, 0x4031475C, 0x4032D97C,
 0x40346B9C, 0x4035FDBB, 0x40378FDB, 0x403921FB, 0x403AB41B, 0x403C463A,
@@ -67,11 +54,7 @@ static int32_t npio2_hw[] = {
  * pio2_3t:  pi/2 - (pio2_1+pio2_2+pio2_3)
  */
 
-#ifdef __STDC__
-static const double 
-#else
-static double 
-#endif
+static const double
 zero =  0.00000000000000000000e+00, /* 0x00000000, 0x00000000 */
 half =  5.00000000000000000000e-01, /* 0x3FE00000, 0x00000000 */
 two24 =  1.67772160000000000000e+07, /* 0x41700000, 0x00000000 */
@@ -83,12 +66,7 @@ pio2_2t =  2.02226624879595063154e-21, /* 0x3BA3198A, 0x2E037073 */
 pio2_3  =  2.02226624871116645580e-21, /* 0x3BA3198A, 0x2E000000 */
 pio2_3t =  8.47842766036889956997e-32; /* 0x397B839A, 0x252049C1 */
 
-#ifdef __STDC__
-       int32_t __ieee754_rem_pio2(double x, double *y)
-#else
-       int32_t __ieee754_rem_pio2(x,y)
-       double x,y[];
-#endif
+int32_t __ieee754_rem_pio2(double x, double *y)
 {
        double z=0.0,w,t,r,fn;
        double tx[3];
@@ -100,7 +78,7 @@ pio2_3t =  8.47842766036889956997e-32; /* 0x397B839A, 0x252049C1 */
        if(ix<=0x3fe921fb)   /* |x| ~<= pi/4 , no need for reduction */
            {y[0] = x; y[1] = 0; return 0;}
        if(ix<0x4002d97c) {  /* |x| < 3pi/4, special case with n=+-1 */
-           if(hx>0) { 
+           if(hx>0) {
                z = x - pio2_1;
                if(ix!=0x3ff921fb) {    /* 33+53 bit pi is good enough */
                    y[0] = z - pio2_1t;
@@ -130,27 +108,27 @@ pio2_3t =  8.47842766036889956997e-32; /* 0x397B839A, 0x252049C1 */
            fn = (double)n;
            r  = t-fn*pio2_1;
            w  = fn*pio2_1t;    /* 1st round good to 85 bit */
-           if(n<32&&ix!=npio2_hw[n-1]) {       
+           if(n<32&&ix!=npio2_hw[n-1]) {
                y[0] = r-w;     /* quick check no cancellation */
            } else {
                u_int32_t high;
                j  = ix>>20;
-               y[0] = r-w; 
+               y[0] = r-w;
                GET_HIGH_WORD(high,y[0]);
                i = j-((high>>20)&0x7ff);
                if(i>16) {  /* 2nd iteration needed, good to 118 */
                    t  = r;
-                   w  = fn*pio2_2;     
+                   w  = fn*pio2_2;
                    r  = t-w;
-                   w  = fn*pio2_2t-((t-r)-w);  
+                   w  = fn*pio2_2t-((t-r)-w);
                    y[0] = r-w;
                    GET_HIGH_WORD(high,y[0]);
                    i = j-((high>>20)&0x7ff);
                    if(i>49)  { /* 3rd iteration need, 151 bits acc */
                        t  = r; /* will cover all possible cases */
-                       w  = fn*pio2_3; 
+                       w  = fn*pio2_3;
                        r  = t-w;
-                       w  = fn*pio2_3t-((t-r)-w);      
+                       w  = fn*pio2_3t-((t-r)-w);
                        y[0] = r-w;
                    }
                }
@@ -159,7 +137,7 @@ pio2_3t =  8.47842766036889956997e-32; /* 0x397B839A, 0x252049C1 */
            if(hx<0)    {y[0] = -y[0]; y[1] = -y[1]; return -n;}
            else         return n;
        }
-    /* 
+    /*
      * all other (large) arguments
      */
        if(ix>=0x7ff00000) {            /* x is inf or NaN */