Totally rework the math library, this time based on the MacOs X

math library (which is itself based on the math lib from FreeBSD).
 -Erik

1 files changed, 0 insertions, 267 deletions

diff --git a/libm/double/tandg.c b/libm/double/tandg.c
deleted file mode 100644
index 92fd1e56b..000000000
--- a/libm/double/tandg.c
+++ /dev/null
@@ -1,267 +0,0 @@
-/*							tandg.c
- *
- *	Circular tangent of argument in degrees
- *
- *
- *
- * SYNOPSIS:
- *
- * double x, y, tandg();
- *
- * y = tandg( x );
- *
- *
- *
- * DESCRIPTION:
- *
- * Returns the circular tangent of the argument x in degrees.
- *
- * Range reduction is modulo pi/4.  A rational function
- *       x + x**3 P(x**2)/Q(x**2)
- * is employed in the basic interval [0, pi/4].
- *
- *
- *
- * ACCURACY:
- *
- *                      Relative error:
- * arithmetic   domain     # trials      peak         rms
- *    DEC      0,10          8000      3.4e-17      1.2e-17
- *    IEEE     0,10         30000      3.2e-16      8.4e-17
- *
- * ERROR MESSAGES:
- *
- *   message         condition          value returned
- * tandg total loss   x > 8.0e14 (DEC)      0.0
- *                    x > 1.0e14 (IEEE)
- * tandg singularity  x = 180 k  +  90     MAXNUM
- */
-/*							cotdg.c
- *
- *	Circular cotangent of argument in degrees
- *
- *
- *
- * SYNOPSIS:
- *
- * double x, y, cotdg();
- *
- * y = cotdg( x );
- *
- *
- *
- * DESCRIPTION:
- *
- * Returns the circular cotangent of the argument x in degrees.
- *
- * Range reduction is modulo pi/4.  A rational function
- *       x + x**3 P(x**2)/Q(x**2)
- * is employed in the basic interval [0, pi/4].
- *
- *
- * ERROR MESSAGES:
- *
- *   message         condition          value returned
- * cotdg total loss   x > 8.0e14 (DEC)      0.0
- *                    x > 1.0e14 (IEEE)
- * cotdg singularity  x = 180 k            MAXNUM
- */
-
-/*
-Cephes Math Library Release 2.8:  June, 2000
-Copyright 1984, 1987, 2000 by Stephen L. Moshier
-*/
-
-#include <math.h>
-
-#ifdef UNK
-static double P[] = {
--1.30936939181383777646E4,
- 1.15351664838587416140E6,
--1.79565251976484877988E7
-};
-static double Q[] = {
-/* 1.00000000000000000000E0,*/
- 1.36812963470692954678E4,
--1.32089234440210967447E6,
- 2.50083801823357915839E7,
--5.38695755929454629881E7
-};
-static double PI180 = 1.74532925199432957692E-2;
-static double lossth = 1.0e14;
-#endif
-
-#ifdef DEC
-static unsigned short P[] = {
-0143514,0113306,0111171,0174674,
-0045214,0147545,0027744,0167346,
-0146210,0177526,0114514,0105660
-};
-static unsigned short Q[] = {
-/*0040200,0000000,0000000,0000000,*/
-0043525,0142457,0072633,0025617,
-0145241,0036742,0140525,0162256,
-0046276,0146176,0013526,0143573,
-0146515,0077401,0162762,0150607
-};
-static unsigned short P1[] = {0036616,0175065,0011224,0164711};
-#define PI180 *(double *)P1
-static double lossth = 8.0e14;
-#endif
-
-#ifdef IBMPC
-static unsigned short P[] = {
-0x3f38,0xd24f,0x92d8,0xc0c9,
-0x9ddd,0xa5fc,0x99ec,0x4131,
-0x9176,0xd329,0x1fea,0xc171
-};
-static unsigned short Q[] = {
-/*0x0000,0x0000,0x0000,0x3ff0,*/
-0x6572,0xeeb3,0xb8a5,0x40ca,
-0xbc96,0x582a,0x27bc,0xc134,
-0xd8ef,0xc2ea,0xd98f,0x4177,
-0x5a31,0x3cbe,0xafe0,0xc189
-};
-static unsigned short P1[] = {0x9d39,0xa252,0xdf46,0x3f91};
-#define PI180 *(double *)P1
-static double lossth = 1.0e14;
-#endif
-
-#ifdef MIEEE
-static unsigned short P[] = {
-0xc0c9,0x92d8,0xd24f,0x3f38,
-0x4131,0x99ec,0xa5fc,0x9ddd,
-0xc171,0x1fea,0xd329,0x9176
-};
-static unsigned short Q[] = {
-0x40ca,0xb8a5,0xeeb3,0x6572,
-0xc134,0x27bc,0x582a,0xbc96,
-0x4177,0xd98f,0xc2ea,0xd8ef,
-0xc189,0xafe0,0x3cbe,0x5a31
-};
-static unsigned short P1[] = {
-0x3f91,0xdf46,0xa252,0x9d39
-};
-#define PI180 *(double *)P1
-static double lossth = 1.0e14;
-#endif
-
-#ifdef ANSIPROT
-extern double polevl ( double, void *, int );
-extern double p1evl ( double, void *, int );
-extern double floor ( double );
-extern double ldexp ( double, int );
-static double tancot( double, int );
-#else
-double polevl(), p1evl(), floor(), ldexp();
-static double tancot();
-#endif
-extern double MAXNUM;
-extern double PIO4;
-
-
-double tandg(x)
-double x;
-{
-
-return( tancot(x,0) );
-}
-
-
-double cotdg(x)
-double x;
-{
-
-return( tancot(x,1) );
-}
-
-
-static double tancot( xx, cotflg )
-double xx;
-int cotflg;
-{
-double x, y, z, zz;
-int j, sign;
-
-/* make argument positive but save the sign */
-if( xx < 0 )
-	{
-	x = -xx;
-	sign = -1;
-	}
-else
-	{
-	x = xx;
-	sign = 1;
-	}
-
-if( x > lossth )
-	{
-	mtherr( "tandg", TLOSS );
-	return(0.0);
-	}
-
-/* compute x mod PIO4 */
-y = floor( x/45.0 );
-
-/* strip high bits of integer part */
-z = ldexp( y, -3 );
-z = floor(z);		/* integer part of y/8 */
-z = y - ldexp( z, 3 );  /* y - 16 * (y/16) */
-
-/* integer and fractional part modulo one octant */
-j = z;
-
-/* map zeros and singularities to origin */
-if( j & 1 )
-	{
-	j += 1;
-	y += 1.0;
-	}
-
-z = x - y * 45.0;
-z *= PI180;
-
-zz = z * z;
-
-if( zz > 1.0e-14 )
-	y = z  +  z * (zz * polevl( zz, P, 2 )/p1evl(zz, Q, 4));
-else
-	y = z;
-	
-if( j & 2 )
-	{
-	if( cotflg )
-		y = -y;
-	else
-		{
-		if( y != 0.0 )
-			{
-			y = -1.0/y;
-			}
-		else
-			{
-			mtherr( "tandg", SING );
-			y = MAXNUM;
-			}
-		}
-	}
-else
-	{
-	if( cotflg )
-		{
-		if( y != 0.0 )
-			y = 1.0/y;
-		else
-			{
-			mtherr( "cotdg", SING );
-			y = MAXNUM;
-			}
-		}
-	}
-
-if( sign < 0 )
-	y = -y;
-
-return( y );
-}