more tarval cleanup

[libfirm] / ir / tv / fltcalc.c

diff --git a/ir/tv/fltcalc.c b/ir/tv/fltcalc.c
index 8938cdc..7d20bab 100644 (file)
--- a/ir/tv/fltcalc.c
+++ b/ir/tv/fltcalc.c
@@ -52,7 +52,7 @@
 
 #include "xmalloc.h"
 
-/** The number of extra precesion rounding bits */
+/** The number of extra precision rounding bits */
 #define ROUNDING_BITS 2
 
 typedef uint32_t UINT32;
@@ -1531,11 +1531,11 @@ void init_fltcalc(int precision) {
                /* does nothing if already init */
                if (precision == 0) precision = FC_DEFAULT_PRECISION;
 
-               init_strcalc(precision + 4);
+               init_strcalc(precision + 2 + ROUNDING_BITS);
 
-               /* needs additionally two bits to round, a bit as explicit 1., and one for
+               /* needs additionally rounding bits, one bit as explicit 1., and one for
                 * addition overflow */
-               max_precision = sc_get_precision() - 4;
+               max_precision = sc_get_precision() - (2 + ROUNDING_BITS);
                if (max_precision < precision)
                        printf("WARNING: not enough precision available, using %d\n", max_precision);