math: fix const warnings

compiler/fn.v

@@ -414,7 +414,7 @@ fn (p mut Parser) fn_decl() {
 		p.genln('init_consts();')
 		if 'os' in p.table.imports {
 			if f.name == 'main' {
-				p.genln('os__args = os__init_os_args(argc, argv);')
+				p.genln('os__args = os__init_os_args(argc, (byteptr*)argv);')
 			}
 			else if f.name == 'WinMain' {
 				p.genln('os__args = os__parse_windows_cmd_line(pCmdLine);')

compiler/main.v

@@ -1045,6 +1045,6 @@ pub fn cerror(s string) {
 fn vhash() string {
 	mut buf := [50]byte
 	buf[0] = 0
-	C.snprintf(buf, 50, '%s', C.V_COMMIT_HASH )
+	C.snprintf(*char(buf), 50, '%s', C.V_COMMIT_HASH )
 	return tos_clone(buf)
 }

vlib/math/math.v

@@ -29,18 +29,18 @@ const (
 )
 
 const (
-        MaxI8   = (1<<7) - 1
-        MinI8   = -1 << 7
-        MaxI16  = (1<<15) - 1
-        MinI16  = -1 << 15
-        MaxI32  = (1<<31) - 1
-        MinI32  = -1 << 31
+        MaxI8   = 127
+        MinI8   = -128
+        MaxI16  = 32767
+        MinI16  = -32768
+        MaxI32  = 2147483647
+        MinI32  = -2147483648
 //        MaxI64  = ((1<<63) - 1)
 //        MinI64  = (-(1 << 63) )
-        MaxU8  = (1<<8) - 1
-        MaxU16 = (1<<16) - 1
-        MaxU32 = (1<<32) - 1
-        MaxU64 = (1<<64) - 1
+        MaxU8  = 255
+        MaxU16 = 65535
+        MaxU32 = 4294967295
+        MaxU64 = 18446744073709551615
 )
 
 // Returns the absolute value.