sleep function and limits

Core.scope

@@ -1,4 +1,5 @@
 import "LowLevel/Floats";
+import "LowLevel/Limits";
 import "Math/Rounding";
 import "Math/Core";
 
@@ -32,6 +33,38 @@ func str input() {
 	ret o;
 }
 
+/%
+@asm
+
+Stops the program for @"time" seconds.
+@"time" will be clamped between 0 and @"INT_MAX".
+%/
+func void sleep(dec time) {
+	// Special cases
+
+	if (time <= 0.0) {
+		ret;
+	}
+
+	if (time > INT_MAX -> dec) {
+		time = INT_MAX -> dec;
+	}
+
+	// Convert input to seconds and nanoseconds
+
+	dec rounded = floor(time);
+	int seconds = rounded -> int;
+	int nano = ((time - rounded) * 1'000'000'000.0) -> int;
+
+	// Call syscall
+
+	assembly {
+		vlist_get rdi, $seconds$
+		vlist_get rsi, $nano$
+		call sleep
+	}
+}
+
 /%
 Converts @"b" into a string.
 

LowLevel/Limits.scope

@@ -0,0 +1,10 @@
+namespace LowLevel;
+
+/%
+The minimum value for a variable with the type of `int`.
+%/
+const int INT_MIN = -9'223'372'036'854'775'808;
+/%
+The maximum value for a variable with the type of `int`.
+%/
+const int INT_MAX = 9'223'372'036'854'775'807;