diff --git a/src/base/cptr.h b/src/base/cptr.h
index 65d6288..3121795 100644
--- a/src/base/cptr.h
+++ b/src/base/cptr.h
@@ -63,7 +63,11 @@ static inline i32 cptr_lastIndexOfChar(const char* src, char fragment)
 
 
 static inline bool cptr_contains(const char* src, const char* fragment){
-    return cptr_seek(src, fragment, 0, -1) +1;
+    return cptr_seek(src, fragment, 0, -1) != -1;
+}
+
+static inline bool cptr_containsChar(const char* src, char c){
+    return cptr_seekChar(src, c, 0, -1) != -1;
 }
 
 char* __cptr_concat(u32 n, ...);
diff --git a/src/random/krandom.h b/src/random/krandom.h
index 2072260..c8ffe8e 100644
--- a/src/random/krandom.h
+++ b/src/random/krandom.h
@@ -57,8 +57,8 @@ static inline i32 krand_next32(krand_statePtr state, i32 from, i32 to) __krand_n
 static inline i64 krand_next64(krand_statePtr state, i64 from, i64 to) __krand_next_definition(64)
 
 // divides random number by 2^64 to return a value between 0 and 1
-static inline f32 krand_nextFloat32(krand_statePtr state) {return (u32)KRAND_ALG32_next(state)/0xffffffff; }
-static inline f64 krand_nextFloat64(krand_statePtr state) {return KRAND_ALG64_next(state)/0xffffffff; }
+static inline f32 krand_nextFloat32(krand_statePtr state) {return (f32)KRAND_ALG32_next(state) / (u32)(-1); }
+static inline f64 krand_nextFloat64(krand_statePtr state) {return (f64)KRAND_ALG64_next(state) / (u64)(-1); }
 
 
 ///@param chance (0-1.0) is probability of success