Added help message & fixed blocksize bug

The bug was caused by integer overflow with too large precisions.

1 files changed, 1 insertions, 0 deletions

diff --git a/intmath.h b/intmath.h
index 5d0b56b..b86ce72 100644
--- a/intmath.h
+++ b/intmath.h
@@ -1,5 +1,6 @@
 int int_pown(unsigned int base, unsigned int exp);
 unsigned long long ull_pown(unsigned int base, unsigned int exp);
+int int_logn(unsigned int base, unsigned int a);
 int int_pow10(unsigned int exp);
 int int_floor(int x, int precision);
 int int_ceil(int x, int precision);