Square root approx function and normalise.

1 files changed, 3 insertions, 0 deletions

diff --git a/maths.h b/maths.h
index af2a027..e72f8fd 100644
--- a/maths.h
+++ b/maths.h
@@ -21,6 +21,7 @@ extern int sqrt_table[sqrt_table_count];
 void init_maths(void);
 
 int fpow(int a, int p);
+int fsqrt(int a);
 
 int* mtx_iden(int* m);
 int* mtx_cpy(int* d, const int* s);
@@ -41,6 +42,8 @@ int* mtx_apply(const int* m, int* v);
 int* vec_cpy(int* d, const int* s, int c);
 int* vec_ref(int* d, const int* i, const int* n, int c);
 int vec_dot(const int* a, const int* b, int d);
+int* vec_nrm(int* d, const int* a, int c);
+int* vec_minise(int* d, const int* a, int c);
 int* persp(int* v, int asp);
 int* ndc2clip(const int* c, int* p);