- remove files that are not either LGPL or Public Domain.

- pull replacement funcs for fpmacros.c from glibc

  This removes the powerpc/classic implementation which did not state any
  license but read:
  Copyright © 1991 Apple Computer, Inc.  All rights reserved.
  and thus was dubious (and not needed).

1 files changed, 0 insertions, 107 deletions

diff --git a/libm/powerpc/classic/s_logb.c b/libm/powerpc/classic/s_logb.c
deleted file mode 100644
index 81daa412e..000000000
--- a/libm/powerpc/classic/s_logb.c
+++ /dev/null
@@ -1,107 +0,0 @@
-/*******************************************************************************
-*                                                                              *
-*      File logb.c,                                                            *
-*      Functions logb.                                                         *
-*      Implementation of logb for the PowerPC.                                 *
-*                                                                              *
-*      Copyright © 1991 Apple Computer, Inc.  All rights reserved.             *
-*                                                                              *
-*      Written by Ali Sazegari, started on June 1991,                          *
-*                                                                              *
-*      August   26 1991: removed CFront Version 1.1d17 warnings.               *
-*      August   27 1991: no errors reported by the test suite.                 *
-*      November 11 1991: changed CLASSEXTENDED to the macro CLASSIFY and       *
-*                        + or - infinity to constants.                         *
-*      November 18 1991: changed the macro CLASSIFY to CLASSEXTENDEDint to     *
-*                        improve performance.                                  *
-*      February 07 1992: changed bit operations to macros (  object size is    *
-*                        unchanged  ).                                         *
-*      September24 1992: took the "#include support.h" out.                    *
-*      December 03 1992: first rs/6000 port.                                   *
-*      August   30 1992: set the divide by zero for the zero argument case.    *
-*      October  05 1993: corrected the environment.                            *
-*      October  17 1994: replaced all environmental functions with __setflm.   *
-*      May      28 1997: made speed improvements.                              *
-*      April    30 2001: forst mac os x port using gcc.                        *
-*                                                                              *
-********************************************************************************
-*     The C math library offers a similar function called "frexp".  It is      *
-*     different in details from logb, but similar in spirit.  This current     *
-*     implementation of logb follows the recommendation in IEEE Standard 854   *
-*     which is different in its handling of denormalized numbers from the IEEE *
-*     Standard 754.                                                            *
-*******************************************************************************/
-
-#include <math.h>
-#include <endian.h>
-
-typedef union
-      {
-      struct {
-#if (__BYTE_ORDER == __BIG_ENDIAN)
-        unsigned long int hi;
-        unsigned long int lo;
-#else
-        unsigned long int lo;
-        unsigned long int hi;
-#endif
-      } words;
-      double dbl;
-      } DblInHex;
-
-static const double twoTo52 = 4.50359962737049600e15;              // 0x1p52
-static const double klTod = 4503601774854144.0;                    // 0x1.000008p52
-static const unsigned long int signMask = 0x80000000ul;
-static const DblInHex minusInf  = {{ 0xFFF00000, 0x00000000 }};
-
-
-/*******************************************************************************
-********************************************************************************
-*                                    L  O  G  B                                *
-********************************************************************************
-*******************************************************************************/
-
-libm_hidden_proto(logb)
-double logb (  double x  )
-      {
-      DblInHex xInHex;
-      long int shiftedExp;
-
-      xInHex.dbl = x;
-      shiftedExp = ( xInHex.words.hi & 0x7ff00000UL ) >> 20;
-
-      if ( shiftedExp == 2047 )
-            {                                            // NaN or INF
-            if ( ( ( xInHex.words.hi & signMask ) == 0 ) || ( x != x ) )
-                  return x;                              // NaN or +INF return x
-            else
-                  return -x;                             // -INF returns +INF
-            }
-
-      if ( shiftedExp != 0 )                             // normal number
-            shiftedExp -= 1023;                          // unbias exponent
-
-      else if ( x == 0.0 )
-            {                                            // zero
-            xInHex.words.hi = 0x0UL;                      // return -infinity
-            return (  minusInf.dbl  );
-            }
-
-      else
-            {                                            // subnormal number
-            xInHex.dbl *= twoTo52;                       // scale up
-            shiftedExp = ( xInHex.words.hi & 0x7ff00000UL ) >> 20;
-            shiftedExp -= 1075;                          // unbias exponent
-            }
-
-      if ( shiftedExp == 0 )                             // zero result
-            return ( 0.0 );
-
-      else
-            {                                            // nonzero result
-            xInHex.dbl = klTod;
-            xInHex.words.lo += shiftedExp;
-            return ( xInHex.dbl - klTod );
-            }
-      }
-libm_hidden_def(logb)