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, 272 deletions

diff --git a/libm/double/fltest.c b/libm/double/fltest.c
deleted file mode 100644
index f2e3d8665..000000000
--- a/libm/double/fltest.c
+++ /dev/null
@@ -1,272 +0,0 @@
-/* fltest.c
- * Test program for floor(), frexp(), ldexp()
- */
-
-/*
-Cephes Math Library Release 2.1:  December, 1988
-Copyright 1984, 1987, 1988 by Stephen L. Moshier
-Direct inquiries to 30 Frost Street, Cambridge, MA 02140
-*/
-
-
-
-#include <math.h>
-extern double MACHEP;
-#define UTH -1023
-
-main()
-{
-double x, y, y0, z, f, x00, y00;
-int i, j, k, e, e0;
-int errfr, errld, errfl, underexp, err, errth, e00;
-double frexp(), ldexp(), floor();
-
-
-/*
-if( 1 )
-	goto flrtst;
-*/
-
-printf( "Testing frexp() and ldexp().\n" );
-errfr = 0;
-errld = 0;
-underexp = 0;
-f = 1.0;
-x00 = 2.0;
-y00 = 0.5;
-e00 = 2;
-
-for( j=0; j<20; j++ )
-{
-if( j == 10 )
-	{
-	f = 1.0;
-	x00 = 2.0;
-	e00 = 1;
-/* Find 2**(2**10) / 2 */
-#ifdef DEC
-	for( i=0; i<5; i++ )
-#else
-	for( i=0; i<9; i++ )
-#endif
-		{
-		x00 *= x00;
-		e00 += e00;
-		}
-	y00 = x00/2.0;
-	x00 = x00 * y00;
-	e00 += e00;
-	y00 = 0.5;
-	}
-x = x00 * f;
-y0 = y00 * f;
-e0 = e00;
-for( i=0; i<2200; i++ )
-	{
-	x /= 2.0;
-	e0 -= 1;
-	if( x == 0.0 )
-		{
-		if( f == 1.0 )
-			underexp = e0;
-		y0 = 0.0;
-		e0 = 0;
-		}
-	y = frexp( x, &e );
-	if( (e0 < -1023) && (e != e0) )
-		{
-		if( e == (e0 - 1) )
-			{
-			e += 1;
-			y /= 2.0;
-			}
-		if( e == (e0 + 1) )
-			{
-			e -= 1;
-			y *= 2.0;
-			}
-		}
-	err = y - y0;
-	if( y0 != 0.0 )
-		err /= y0;
-	if( err < 0.0 )
-		err = -err;
-	if( e0 > -1023 )
-		errth = 0.0;
-	else
-		{/* Denormal numbers may have rounding errors */
-		if( e0 == -1023 )
-			{
-			errth = 2.0 * MACHEP;
-			}
-		else
-			{
-			errth *= 2.0;
-			}
-		}
-
-	if( (x != 0.0) && ((err > errth) || (e != e0)) )
-		{
-		printf( "Test %d: ", j+1 );
-		printf( " frexp( %.15e) =?= %.15e * 2**%d;", x, y, e );
-		printf( " should be %.15e * 2**%d\n", y0, e0 );
-		errfr += 1;
-		}
-	y = ldexp( x, 1-e0 );
-	err = y - 1.0;
-	if( err < 0.0 )
-		err = -err;
-	if( (err > errth) && ((x == 0.0) && (y != 0.0)) )
-		{
-		printf( "Test %d: ", j+1 );
-		printf( "ldexp( %.15e, %d ) =?= %.15e;", x, 1-e0, y );
-		if( x != 0.0 )
-			printf( " should be %.15e\n", f );
-		else
-			printf( " should be %.15e\n", 0.0 );
-		errld += 1;
-		}
-	if( x == 0.0 )
-		{
-		break;
-		}
-	}
-f = f * 1.08005973889;
-}
-
-
-x = 2.22507385850720138309e-308;
-for (i = 0; i < 52; i++)
-  {
-    y = ldexp (x, -i);
-    z = ldexp (y, i);
-    if (x != z)
-      {
-	printf ("x %.16e, i %d, y %.16e, z %.16e\n", x, i, y, z);
-	errld += 1;
-      }
-  }
-
-
-if( (errld == 0) && (errfr == 0) )
-	{
-	printf( "No errors found.\n" );
-	}
-
-flrtst:
-
-printf( "Testing floor().\n" );
-errfl = 0;
-
-f = 1.0/MACHEP;
-x00 = 1.0;
-for( j=0; j<57; j++ )
-{
-x = x00 - 1.0;
-for( i=0; i<128; i++ )
-	{
-	y = floor(x);
-	if( y != x )
-		{
-		flierr( x, y, j );
-		errfl += 1;
-		}
-/* Warning! the if() statement is compiler dependent,
- * since x-0.49 may be held in extra precision accumulator
- * so would never compare equal to x!  The subroutine call
- * y = floor() forces z to be stored as a double and reloaded
- * for the if() statement.
- */
-	z = x - 0.49;
-	y = floor(z);
-	if( z == x )
-		break;
-	if( y != (x - 1.0) )
-		{
-		flierr( z, y, j );
-		errfl += 1;
-		}
-
-	z = x + 0.49;
-	y = floor(z);
-	if( z != x )
-		{
-		if( y != x )
-			{
-			flierr( z, y, j );
-			errfl += 1;
-			}
-		}
-	x = -x;
-	y = floor(x);
-	if( z != x )
-		{
-		if( y != x )
-			{
-			flierr( x, y, j );
-			errfl += 1;
-			}
-		}
-	z = x + 0.49;
-	y = floor(z);
-	if( z != x )
-		{
-		if( y != x )
-			{
-			flierr( z, y, j );
-			errfl += 1;
-			}
-		}
-	z = x - 0.49;
-	y = floor(z);
-	if( z != x )
-		{
-		if( y != (x - 1.0) )
-			{
-			flierr( z, y, j );
-			errfl += 1;
-			}
-		}
-	x = -x;
-	x += 1.0;
-	}
-x00 = x00 + x00;
-}
-y = floor(0.0);
-if( y != 0.0 )
-	{
-	flierr( 0.0, y, 57 );
-	errfl += 1;
-	}
-y = floor(-0.0);
-if( y != 0.0 )
-	{
-	flierr( -0.0, y, 58 );
-	errfl += 1;
-	}
-y = floor(-1.0);
-if( y != -1.0 )
-	{
-	flierr( -1.0, y, 59 );
-	errfl += 1;
-	}
-y = floor(-0.1);
-if( y != -1.0 )
-	{
-	flierr( -0.1, y, 60 );
-	errfl += 1;
-	}
-
-if( errfl == 0 )
-	printf( "No errors found in floor().\n" );
-
-}
-
-
-flierr( x, y, k )
-double x, y;
-int k;
-{
-printf( "Test %d: ", k+1 );
-printf( "floor(%.15e) =?= %.15e\n", x, y );
-}