compiler: make V compilable wit the tcc backend

compiler/comptime.v

@@ -41,6 +41,12 @@ fn (p mut Parser) comp_time() {
 			p.statements_no_rcbr()
 			p.genln('#endif')
 		}
+		else if name == 'tinyc' {
+			p.genln('#ifdef __TINYC__')
+			p.check(.lcbr)
+			p.statements_no_rcbr()
+			p.genln('#endif')
+		}
 		else {
 			println('Supported platforms:')
 			println(supported_platforms)

compiler/msvc.v

@@ -4,6 +4,9 @@ import os
 
 #flag windows -l shell32
 
+// RegOpenKeyExA etc
+#flag windows -l advapi32
+
 struct MsvcResult {
 	full_cl_exe_path string
 	exe_path string

vlib/builtin/int.v

@@ -31,7 +31,7 @@ pub fn (a f64) eq(b f64) bool {
 	return C.fabs(a - b) <= C.DBL_EPSILON	
 }
 pub fn (a f32) eq(b f32) bool {
-	return C.fabsf(a - b) <= C.FLT_EPSILON	
+	return C.fabs(a - b) <= C.FLT_EPSILON	
 }
 pub fn (a f64) eqbit(b f64) bool {
 	return C.DEFAULT_EQUAL(a, b)

vlib/builtin/string.v

@@ -201,7 +201,11 @@ pub fn (s string) u32() u32 {
 }
 
 pub fn (s string) u64() u64 {
-	return C.strtoull(*char(s.str), 0, 0)
+	//$if tinyc {
+		return u64(s.int()) // TODO
+	//} $else {
+		//return C.strtoull(*char(s.str), 0, 0)
+	//}
 	//return C.atoll(s.str) // temporary fix for tcc on windows.
 }