diff options
Diffstat (limited to 'gcc/double-int.c')
| -rw-r--r-- | gcc/double-int.c | 22 |
1 files changed, 21 insertions, 1 deletions
diff --git a/gcc/double-int.c b/gcc/double-int.c index d0fde0e..3a51bd3 100644 --- a/gcc/double-int.c +++ b/gcc/double-int.c @@ -1,5 +1,5 @@ /* Operations with long integers. - Copyright (C) 2006, 2007, 2009, 2010 Free Software Foundation, Inc. + Copyright (C) 2006, 2007, 2009, 2010, 2012 Free Software Foundation, Inc. This file is part of GCC. @@ -616,6 +616,26 @@ double_int_mask (unsigned prec) return mask; } +/* Returns a maximum value for signed or unsigned integer + of precision PREC. */ + +double_int +double_int_max_value (unsigned int prec, bool uns) +{ + return double_int_mask (prec - (uns ? 0 : 1)); +} + +/* Returns a minimum value for signed or unsigned integer + of precision PREC. */ + +double_int +double_int_min_value (unsigned int prec, bool uns) +{ + if (uns) + return double_int_zero; + return double_int_lshift (double_int_one, prec - 1, prec, false); +} + /* Clears the bits of CST over the precision PREC. If UNS is false, the bits outside of the precision are set to the sign bit (i.e., the PREC-th one), otherwise they are set to zero. |