Update copyright dates with scripts/update-copyrights.

[thirdparty/glibc.git] / sysdeps / powerpc / powerpc32 / fpu / s_round.S

diff --git a/sysdeps/powerpc/powerpc32/fpu/s_round.S b/sysdeps/powerpc/powerpc32/fpu/s_round.S
index 590c87ad8c2884dcf75af42954fd2b13734f6531..ae25364bd90e9c677be077efe87e7426a805a662 100644 (file)
--- a/sysdeps/powerpc/powerpc32/fpu/s_round.S
+++ b/sysdeps/powerpc/powerpc32/fpu/s_round.S
@@ -1,5 +1,5 @@
 /* round function.  PowerPC32 version.
-   Copyright (C) 2004, 2006 Free Software Foundation, Inc.
+   Copyright (C) 2004-2016 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
@@ -13,9 +13,8 @@
    Lesser General Public License for more details.
 
    You should have received a copy of the GNU Lesser General Public
-   License along with the GNU C Library; if not, write to the Free
-   Software Foundation, Inc., 1 Franklin Street, Fifth Floor, Boston MA
-   02110-1301 USA.  */
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
 
 #include <sysdep.h>
 #include <math_ldbl_opt.h>
@@ -28,31 +27,23 @@
        .long 0x3f000000
 
 /* double [fp1] round (double x [fp1])
-   IEEE 1003.1 round function.  IEEE specifies "round to the nearest 
+   IEEE 1003.1 round function.  IEEE specifies "round to the nearest
    integer value, rounding halfway cases away from zero, regardless of
    the current rounding mode."  However PowerPC Architecture defines
-   "Round to Nearest" as "Choose the best approximation. In case of a 
-   tie, choose the one that is even (least significant bit o).". 
+   "Round to Nearest" as "Choose the best approximation. In case of a
+   tie, choose the one that is even (least significant bit o).".
    So we can't use the PowerPC "Round to Nearest" mode. Instead we set
    "Round toward Zero" mode and round by adding +-0.5 before rounding
    to the integer value.  */
 
        .section        ".text"
 ENTRY (__round)
-       mffs    fp11            /* Save current FPU rounding mode.  */
 #ifdef SHARED
        mflr    r11
        cfi_register(lr,r11)
-# ifdef HAVE_ASM_PPC_REL16
-       bcl     20,31,1f
-1:     mflr    r9
-       addis   r9,r9,.LC0-1b@ha
-       addi    r9,r9,.LC0-1b@l
-# else
-       bl      _GLOBAL_OFFSET_TABLE_@local-4
-       mflr    r10
-       lwz     r9,.LC0@got(10)
-# endif
+       SETUP_GOT_ACCESS(r9,got_label)
+       addis   r9,r9,.LC0-got_label@ha
+       addi    r9,r9,.LC0-got_label@l
        mtlr    r11
        cfi_same_value (lr)
        lfs     fp13,0(r9)
@@ -63,6 +54,8 @@ ENTRY (__round)
        fabs    fp0,fp1
        fsub    fp12,fp13,fp13  /* generate 0.0  */
        fcmpu   cr7,fp0,fp13    /* if (fabs(x) > TWO52)  */
+       mffs    fp11            /* Save current FPU rounding mode and
+                                  "inexact" state.  */
        fcmpu   cr6,fp1,fp12    /* if (x > 0.0)  */
        bnllr-  cr7
        mtfsfi  7,1             /* Set rounding mode toward 0.  */
@@ -78,7 +71,8 @@ ENTRY (__round)
        fsub    fp1,fp1,fp13    /* x-= TWO52;  */
        fabs    fp1,fp1         /* if (x == 0.0)  */
                                /* x = 0.0; */
-       mtfsf   0x01,fp11       /* restore previous rounding mode.  */
+       mtfsf   0xff,fp11       /* Restore previous rounding mode and
+                                  "inexact" state.  */
        blr
 .L4:
        fsub    fp9,fp1,fp10    /* x+= 0.5;  */
@@ -88,7 +82,8 @@ ENTRY (__round)
        fnabs   fp1,fp1         /* if (x == 0.0)  */
                                /* x = -0.0; */
 .L9:
-       mtfsf   0x01,fp11       /* restore previous rounding mode.  */
+       mtfsf   0xff,fp11       /* Restore previous rounding mode and
+                                  "inexact" state.  */
        blr
        END (__round)