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, 376 deletions

diff --git a/libm/ldouble/atanl.c b/libm/ldouble/atanl.c
deleted file mode 100644
index 9e6d9af3c..000000000
--- a/libm/ldouble/atanl.c
+++ /dev/null
@@ -1,376 +0,0 @@
-/*							atanl.c
- *
- *	Inverse circular tangent, long double precision
- *      (arctangent)
- *
- *
- *
- * SYNOPSIS:
- *
- * long double x, y, atanl();
- *
- * y = atanl( x );
- *
- *
- *
- * DESCRIPTION:
- *
- * Returns radian angle between -pi/2 and +pi/2 whose tangent
- * is x.
- *
- * Range reduction is from four intervals into the interval
- * from zero to  tan( pi/8 ).  The approximant uses a rational
- * function of degree 3/4 of the form x + x**3 P(x)/Q(x).
- *
- *
- *
- * ACCURACY:
- *
- *                      Relative error:
- * arithmetic   domain     # trials      peak         rms
- *    IEEE      -10, 10    150000       1.3e-19     3.0e-20
- *
- */
-/*							atan2l()
- *
- *	Quadrant correct inverse circular tangent,
- *	long double precision
- *
- *
- *
- * SYNOPSIS:
- *
- * long double x, y, z, atan2l();
- *
- * z = atan2l( y, x );
- *
- *
- *
- * DESCRIPTION:
- *
- * Returns radian angle whose tangent is y/x.
- * Define compile time symbol ANSIC = 1 for ANSI standard,
- * range -PI < z <= +PI, args (y,x); else ANSIC = 0 for range
- * 0 to 2PI, args (x,y).
- *
- *
- *
- * ACCURACY:
- *
- *                      Relative error:
- * arithmetic   domain     # trials      peak         rms
- *    IEEE      -10, 10     60000       1.7e-19     3.2e-20
- * See atan.c.
- *
- */
-
-/*							atan.c */
-
-
-/*
-Cephes Math Library Release 2.7:  May, 1998
-Copyright 1984, 1990, 1998 by Stephen L. Moshier
-*/
-
-
-#include <math.h>
-
-#ifdef UNK
-static long double P[] = {
--8.6863818178092187535440E-1L,
--1.4683508633175792446076E1L,
--6.3976888655834347413154E1L,
--9.9988763777265819915721E1L,
--5.0894116899623603312185E1L,
-};
-static long double Q[] = {
-/* 1.00000000000000000000E0L,*/
- 2.2981886733594175366172E1L,
- 1.4399096122250781605352E2L,
- 3.6144079386152023162701E2L,
- 3.9157570175111990631099E2L,
- 1.5268235069887081006606E2L,
-};
-
-/* tan( 3*pi/8 ) */
-static long double T3P8 =  2.41421356237309504880169L;
-
-/* tan( pi/8 ) */
-static long double TP8 =  4.1421356237309504880169e-1L;
-#endif
-
-
-#ifdef IBMPC
-static unsigned short P[] = {
-0x8ece,0xce53,0x1266,0xde5f,0xbffe, XPD
-0x07e6,0xa061,0xa6bf,0xeaef,0xc002, XPD
-0x53ee,0xf291,0x557f,0xffe8,0xc004, XPD
-0xf9d6,0xeda6,0x3f3e,0xc7fa,0xc005, XPD
-0xb6c3,0x6abc,0x9361,0xcb93,0xc004, XPD
-};
-static unsigned short Q[] = {
-/*0x0000,0x0000,0x0000,0x8000,0x3fff,*/
-0x54d4,0x894e,0xe76e,0xb7da,0x4003, XPD
-0x76b9,0x7a46,0xafa2,0x8ffd,0x4006, XPD
-0xe3a9,0xe9c0,0x6bee,0xb4b8,0x4007, XPD
-0xabc1,0x50a7,0xb098,0xc3c9,0x4007, XPD
-0x891c,0x100d,0xae89,0x98ae,0x4006, XPD
-};
-
-/* tan( 3*pi/8 ) = 2.41421356237309504880 */
-static unsigned short T3P8A[] = {0x3242,0xfcef,0x7999,0x9a82,0x4000, XPD};
-#define T3P8 *(long double *)T3P8A
-
-/* tan( pi/8 ) = 0.41421356237309504880 */
-static unsigned short TP8A[] = {0x9211,0xe779,0xcccf,0xd413,0x3ffd, XPD};
-#define TP8 *(long double *)TP8A
-#endif
-
-#ifdef MIEEE
-static unsigned long P[] = {
-0xbffe0000,0xde5f1266,0xce538ece,
-0xc0020000,0xeaefa6bf,0xa06107e6,
-0xc0040000,0xffe8557f,0xf29153ee,
-0xc0050000,0xc7fa3f3e,0xeda6f9d6,
-0xc0040000,0xcb939361,0x6abcb6c3,
-};
-static unsigned long Q[] = {
-/*0x3fff0000,0x80000000,0x00000000,*/
-0x40030000,0xb7dae76e,0x894e54d4,
-0x40060000,0x8ffdafa2,0x7a4676b9,
-0x40070000,0xb4b86bee,0xe9c0e3a9,
-0x40070000,0xc3c9b098,0x50a7abc1,
-0x40060000,0x98aeae89,0x100d891c,
-};
-
-/* tan( 3*pi/8 ) = 2.41421356237309504880 */
-static long T3P8A[] = {0x40000000,0x9a827999,0xfcef3242};
-#define T3P8 *(long double *)T3P8A
-
-/* tan( pi/8 ) = 0.41421356237309504880 */
-static long TP8A[] = {0x3ffd0000,0xd413cccf,0xe7799211};
-#define TP8 *(long double *)TP8A
-#endif
-
-#ifdef ANSIPROT
-extern long double polevll ( long double, void *, int );
-extern long double p1evll ( long double, void *, int );
-extern long double fabsl ( long double );
-extern int signbitl ( long double );
-extern int isnanl ( long double );
-long double atanl ( long double );
-#else
-long double polevll(), p1evll(), fabsl(), signbitl(), isnanl();
-long double atanl();
-#endif
-#ifdef INFINITIES
-extern long double INFINITYL;
-#endif
-#ifdef NANS
-extern long double NANL;
-#endif
-#ifdef MINUSZERO
-extern long double NEGZEROL;
-#endif
-
-long double atanl(x)
-long double x;
-{
-extern long double PIO2L, PIO4L;
-long double y, z;
-short sign;
-
-#ifdef MINUSZERO
-if( x == 0.0L )
-	return(x);
-#endif
-#ifdef INFINITIES
-if( x == INFINITYL )
-	return( PIO2L );
-if( x == -INFINITYL )
-	return( -PIO2L );
-#endif
-/* make argument positive and save the sign */
-sign = 1;
-if( x < 0.0L )
-	{
-	sign = -1;
-	x = -x;
-	}
-
-/* range reduction */
-if( x > T3P8 )
-	{
-	y = PIO2L;
-	x = -( 1.0L/x );
-	}
-
-else if( x > TP8 )
-	{
-	y = PIO4L;
-	x = (x-1.0L)/(x+1.0L);
-	}
-else
-	y = 0.0L;
-
-/* rational form in x**2 */
-z = x * x;
-y = y + ( polevll( z, P, 4 ) / p1evll( z, Q, 5 ) ) * z * x + x;
-
-if( sign < 0 )
-	y = -y;
-
-return(y);
-}
-
-/*							atan2	*/
-
-
-extern long double PIL, PIO2L, MAXNUML;
-
-#if ANSIC
-long double atan2l( y, x )
-#else
-long double atan2l( x, y )
-#endif
-long double x, y;
-{
-long double z, w;
-short code;
-
-code = 0;
-
-if( x < 0.0L )
-	code = 2;
-if( y < 0.0L )
-	code |= 1;
-
-#ifdef NANS
-if( isnanl(x) )
-	return(x);
-if( isnanl(y) )
-	return(y);
-#endif
-#ifdef MINUSZERO
-if( y == 0.0L )
-	{
-	if( signbitl(y) )
-		{
-		if( x > 0.0L )
-			z = y;
-		else if( x < 0.0L )
-			z = -PIL;
-		else
-			{
-			if( signbitl(x) )
-				z = -PIL;
-			else
-				z = y;
-			}
-		}
-	else /* y is +0 */
-		{
-		if( x == 0.0L )
-			{
-			if( signbitl(x) )
-				z = PIL;
-			else
-				z = 0.0L;
-			}
-		else if( x > 0.0L )
-			z = 0.0L;
-		else
-			z = PIL;
-		}
-	return z;
-	}
-if( x == 0.0L )
-	{
-	if( y > 0.0L )
-		z = PIO2L;
-	else
-		z = -PIO2L;
-	return z;
-	}
-#endif /* MINUSZERO */
-#ifdef INFINITIES
-if( x == INFINITYL )
-	{
-	if( y == INFINITYL )
-		z = 0.25L * PIL;
-	else if( y == -INFINITYL )
-		z = -0.25L * PIL;
-	else if( y < 0.0L )
-		z = NEGZEROL;
-	else
-		z = 0.0L;
-	return z;
-	}
-if( x == -INFINITYL )
-	{
-	if( y == INFINITYL )
-		z = 0.75L * PIL;
-	else if( y == -INFINITYL )
-		z = -0.75L * PIL;
-	else if( y >= 0.0L )
-		z = PIL;
-	else
-		z = -PIL;
-	return z;
-	}
-if( y == INFINITYL )
-	return( PIO2L );
-if( y == -INFINITYL )
-	return( -PIO2L );
-#endif /* INFINITIES */
-
-#ifdef INFINITIES
-if( x == 0.0L )
-#else
-if( fabsl(x) <= (fabsl(y) / MAXNUML) )
-#endif
-	{
-	if( code & 1 )
-		{
-#if ANSIC
-		return( -PIO2L );
-#else
-		return( 3.0L*PIO2L );
-#endif
-		}
-	if( y == 0.0L )
-		return( 0.0L );
-	return( PIO2L );
-	}
-
-if( y == 0.0L )
-	{
-	if( code & 2 )
-		return( PIL );
-	return( 0.0L );
-	}
-
-
-switch( code )
-	{
-	default:
-#if ANSIC
-	case 0:
-	case 1: w = 0.0L; break;
-	case 2: w = PIL; break;
-	case 3: w = -PIL; break;
-#else
-	case 0: w = 0.0L; break;
-	case 1: w = 2.0L * PIL; break;
-	case 2:
-	case 3: w = PIL; break;
-#endif
-	}
-
-z = w + atanl( y/x );
-#ifdef MINUSZERO
-if( z == 0.0L && y < 0.0L )
-	z = NEGZEROL;
-#endif
-return( z );
-}