Replace legacy numeric constants with associated constants

ntp-proto/src/time_types.rs

@@ -272,11 +272,11 @@ impl NtpDuration {
 
         // Ensure proper saturating behaviour
         let duration = match i as i64 {
-            i if i >= std::i32::MIN as i64 && i <= std::i32::MAX as i64 => {
+            i if i >= i32::MIN as i64 && i <= i32::MAX as i64 => {
                 (i << 32) | (f * u32::MAX as f64) as i64
             }
-            i if i < std::i32::MIN as i64 => std::i64::MIN,
-            i if i > std::i32::MAX as i64 => std::i64::MAX,
+            i if i < i32::MIN as i64 => i64::MIN,
+            i if i > i32::MAX as i64 => i64::MAX,
             _ => unreachable!(),
         };
 
@@ -310,7 +310,7 @@ impl NtpDuration {
     pub const fn from_exponent(input: i8) -> Self {
         Self {
             duration: match input {
-                exp if exp > 30 => std::i64::MAX,
+                exp if exp > 30 => i64::MAX,
                 exp if exp > 0 && exp <= 30 => 0x1_0000_0000_i64 << exp,
                 exp if exp >= -32 && exp <= 0 => 0x1_0000_0000_i64 >> -exp,
                 _ => 0,
@@ -803,11 +803,11 @@ mod tests {
     fn duration_from_float_seconds_saturates() {
         assert_eq!(
             NtpDuration::from_seconds(1e40),
-            NtpDuration::from_fixed_int(std::i64::MAX)
+            NtpDuration::from_fixed_int(i64::MAX)
         );
         assert_eq!(
             NtpDuration::from_seconds(-1e40),
-            NtpDuration::from_fixed_int(std::i64::MIN)
+            NtpDuration::from_fixed_int(i64::MIN)
         );
     }