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Diffstat (limited to 'arch/mips/math-emu/ieee754m.c')
-rw-r--r-- | arch/mips/math-emu/ieee754m.c | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/arch/mips/math-emu/ieee754m.c b/arch/mips/math-emu/ieee754m.c new file mode 100644 index 000000000000..d66896cd8f21 --- /dev/null +++ b/arch/mips/math-emu/ieee754m.c @@ -0,0 +1,56 @@ +/* + * floor, trunc, ceil + */ +/* + * MIPS floating point support + * Copyright (C) 1994-2000 Algorithmics Ltd. + * http://www.algor.co.uk + * + * ######################################################################## + * + * This program is free software; you can distribute it and/or modify it + * under the terms of the GNU General Public License (Version 2) as + * published by the Free Software Foundation. + * + * This program is distributed in the hope it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 59 Temple Place - Suite 330, Boston MA 02111-1307, USA. + * + * ######################################################################## + */ + + +#include "ieee754.h" + +ieee754dp ieee754dp_floor(ieee754dp x) +{ + ieee754dp i; + + if (ieee754dp_lt(ieee754dp_modf(x, &i), ieee754dp_zero(0))) + return ieee754dp_sub(i, ieee754dp_one(0)); + else + return i; +} + +ieee754dp ieee754dp_ceil(ieee754dp x) +{ + ieee754dp i; + + if (ieee754dp_gt(ieee754dp_modf(x, &i), ieee754dp_zero(0))) + return ieee754dp_add(i, ieee754dp_one(0)); + else + return i; +} + +ieee754dp ieee754dp_trunc(ieee754dp x) +{ + ieee754dp i; + + (void) ieee754dp_modf(x, &i); + return i; +} |