diff options
author | Markos Chandras <markos.chandras@imgtec.com> | 2009-11-26 10:20:01 +0000 |
---|---|---|
committer | Bernhard Reutner-Fischer <rep.dot.nop@gmail.com> | 2013-03-14 22:47:04 +0100 |
commit | cf349fcbb555b77f22d96fe3a7b25579337ab989 (patch) | |
tree | fd6cd3d86148ab0757c2531c2e0be68c690598ad /libm/metag/fesetround.c | |
parent | 22686a1383c4a4a319eaaa6b16b1a9540114bd66 (diff) |
libm: Add support for the Meta architecture
Signed-off-by: Markos Chandras <markos.chandras@imgtec.com>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
Diffstat (limited to 'libm/metag/fesetround.c')
-rw-r--r-- | libm/metag/fesetround.c | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/libm/metag/fesetround.c b/libm/metag/fesetround.c new file mode 100644 index 000000000..2d5b2526f --- /dev/null +++ b/libm/metag/fesetround.c @@ -0,0 +1,41 @@ +/* Set current rounding direction. + Copyright (C) 2013 Imagination Technologies Ltd. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + 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., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +#include <fenv.h> +#include <unistd.h> + +int +fesetround (int round) +{ + unsigned int txmode; + + if ((round & ~0x3) != 0) + /* ROUND is no valid rounding mode. */ + return 1; + + __asm__ ("MOV %0,TXMODE" : "=r" (txmode)); + + txmode &= ~(0x3 << 16); + /* Write rounding mode and guard bit. */ + txmode |= (0x1 << 18 ) | (round << 16); + + __asm__ ("MOV TXMODE,%0" : : "r" (txmode)); + + return 0; +} |