Mercurialcrosstool-ng / file revision
summary | shortlog | changelog | graph | tags | branches | files | changeset | file | latest | revisions | annotate | diff | raw | help
patches/glibc/2.9/270-ldbl-nexttowardf.patch
author Cody Schafer <dev@codyps.com>
Fri May 09 19:13:49 2014 -0700 (2014-05-09)
changeset 3312 4876ff97e039
parent 1201 c9967a6e3b25
permissions -rw-r--r--
cc/gcc: allow CC_EXTRA_CONFIG_ARRAY on baremetal

The final bare-metal compiler is built using the core backend.
Currently the core uses the CC_CORE_EXTRA_CONFIG_ARRAY variable.

While this works as supposed to, this can leave the user puzzled
in the menuconfig, since all he can see is the core options, not
the final options.

Only show the core options if any of the core passes are needed,
and use the final options in the core-backend if we're issuing
the bare-metal compiler.

Signed-off-by: Cody P Schafer <dev@codyps.com>
[yann.morin.1998@free.fr: hide core options if no core pass needed;
use final option in core backend if issuing the bare-metal compiler]
Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Message-Id: <22181e546ba746202489.1399688067@localhost>
Patchwork-Id: 347586 
     1 Original patch from: gentoo/src/patchsets/glibc/2.9/1073_all_glibc-ldbl-nexttowardf.patch

     2 

     3 -= BEGIN original header =-

     4 ripped from Debian

     5 

     6 this change was made to generic __nexttowardf, but not the long double version

     7 

     8 2008-05-05  Aurelien Jarno  <aurelien@aurel32.net>

     9 

    10 	* sysdeps/ieee754/ldbl-128/s_nexttowardf.c: Include float.h.

    11 	(__nexttowardf): Use math_opt_barrier and

    12 	math_force_eval macros.  If FLT_EVAL_METHOD is not 0, force

    13 	x to float using asm.

    14 

    15 -= END original header =-

    16 

    17 diff -durN glibc-2_9.orig/sysdeps/ieee754/ldbl-128/s_nexttowardf.c glibc-2_9/sysdeps/ieee754/ldbl-128/s_nexttowardf.c

    18 --- glibc-2_9.orig/sysdeps/ieee754/ldbl-128/s_nexttowardf.c	1999-07-14 02:09:42.000000000 +0200

    19 +++ glibc-2_9/sysdeps/ieee754/ldbl-128/s_nexttowardf.c	2009-02-02 22:00:59.000000000 +0100

    20 @@ -19,7 +19,8 @@

    21  #endif

    22  

    23  #include "math.h"

    24 -#include "math_private.h"

    25 +#include <math_private.h>

    26 +#include <float.h>

    27  

    28  #ifdef __STDC__

    29  	float __nexttowardf(float x, long double y)

    30 @@ -44,10 +45,12 @@

    31  	   return x+y;

    32  	if((long double) x==y) return y;	/* x=y, return y */

    33  	if(ix==0) {				/* x == 0 */

    34 -	    float x2;

    35 +	    float u;

    36  	    SET_FLOAT_WORD(x,(u_int32_t)((hy>>32)&0x80000000)|1);/* return +-minsub*/

    37 -	    x2 = x*x;

    38 -	    if(x2==x) return x2; else return x;	/* raise underflow flag */

    39 +	    u = math_opt_barrier (x);

    40 +	    u = u * u;

    41 +	    math_force_eval (u);		/* raise underflow flag */

    42 +	    return x;

    43  	}

    44  	if(hx>=0) {				/* x > 0 */

    45  	    if(hy<0||(ix>>23)>(iy>>48)-0x3f80

    46 @@ -67,13 +70,16 @@

    47  	    }

    48  	}

    49  	hy = hx&0x7f800000;

    50 -	if(hy>=0x7f800000) return x+x;	/* overflow  */

    51 +	if(hy>=0x7f800000) {

    52 +	  x = x+x;	/* overflow  */

    53 +	  if (FLT_EVAL_METHOD != 0)

    54 +	    /* Force conversion to float.  */

    55 +	    asm ("" : "+m"(x));

    56 +	  return x;

    57 +	}

    58  	if(hy<0x00800000) {		/* underflow */

    59 -	    float x2 = x*x;

    60 -	    if(x2!=x) {		/* raise underflow flag */

    61 -	        SET_FLOAT_WORD(x2,hx);

    62 -		return x2;

    63 -	    }

    64 +	    float u = x*x;

    65 +	    math_force_eval (u);	/* raise underflow flag */

    66  	}

    67  	SET_FLOAT_WORD(x,hx);

    68  	return x;
crosstool-ng