libm: remove scalbln implementation, it seems to be less correct than scalbn.

 instead, either alias scalbln to scalbn if int == long on this arch, or
 just call scalbn form scalbln.

    text           data     bss     dec     hex filename
-  45297            180       4   45481    b1a9 lib/libm.so
+  44969            180       4   45153    b061 lib/libm.so

1 files changed, 0 insertions, 52 deletions

diff --git a/libm/s_scalbln.c b/libm/s_scalbln.c
deleted file mode 100644
index 3d0ff2f77..000000000
--- a/libm/s_scalbln.c
+++ /dev/null
@@ -1,52 +0,0 @@
-/*
- * ====================================================
- * 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
- * is preserved.
- * ====================================================
- */
-
-/*
- * scalbn (double x, int n)
- * scalbn(x,n) returns x* 2**n  computed by  exponent
- * manipulation rather than by actually performing an
- * exponentiation or a multiplication.
- */
-
-#include "math.h"
-#include "math_private.h"
-
-static const double
-two54   =  1.80143985094819840000e+16, /* 0x43500000, 0x00000000 */
-twom54  =  5.55111512312578270212e-17, /* 0x3C900000, 0x00000000 */
-huge   = 1.0e+300,
-tiny   = 1.0e-300;
-
-double scalbln(double x, long int n)
-{
-	int32_t k,hx,lx;
-	EXTRACT_WORDS(hx,lx,x);
-        k = (hx&0x7ff00000)>>20;		/* extract exponent */
-        if (k==0) {				/* 0 or subnormal x */
-            if ((lx|(hx&0x7fffffff))==0) return x; /* +-0 */
-	    x *= two54;
-	    GET_HIGH_WORD(hx,x);
-	    k = ((hx&0x7ff00000)>>20) - 54;
-	    }
-        if (k==0x7ff) return x+x;		/* NaN or Inf */
-        k = k+n;
-        if (n> 50000 || k >  0x7fe)
-	  return huge*copysign(huge,x); /* overflow  */
-	if (n< -50000) return tiny*copysign(tiny,x); /*underflow*/
-        if (k > 0)				/* normal result */
-	    {SET_HIGH_WORD(x,(hx&0x800fffff)|(k<<20)); return x;}
-        if (k <= -54)
-	  return tiny*copysign(tiny,x);	/*underflow*/
-        k += 54;				/* subnormal result */
-	SET_HIGH_WORD(x,(hx&0x800fffff)|(k<<20));
-        return x*twom54;
-}
-libm_hidden_def(scalbln)