Simplify conversions & casts (#388)

Author: schlosna

human-readable-types/src/main/java/com/palantir/humanreadabletypes/HumanReadableByteCount.java

@@ -302,10 +302,10 @@ public String toString() {
     public enum ByteUnit {
         BYTE(1, "bytes"),
         KiB(1024L, "kibibytes"),
-        MiB((long) Math.pow((double) 1024L, (double) 2L), "mebibytes"),
-        GiB((long) Math.pow((double) 1024L, (double) 3L), "gibibytes"),
-        TiB((long) Math.pow((double) 1024L, (double) 4L), "tebibytes"),
-        PiB((long) Math.pow((double) 1024L, (double) 5L), "pebibytes");
+        MiB((long) Math.pow(1024.0, 2.0), "mebibytes"),
+        GiB((long) Math.pow(1024.0, 3.0), "gibibytes"),
+        TiB((long) Math.pow(1024.0, 4.0), "tebibytes"),
+        PiB((long) Math.pow(1024.0, 5.0), "pebibytes");
 
         private final long multiplier;
         private final String suffix;

human-readable-types/src/test/java/com/palantir/humanreadabletypes/HumanReadableByteCountTests.java

@@ -44,27 +44,28 @@ public void testParseKibiBytes() {
 
     @Test
     public void testParseMibiBytes() {
-        assertStringsEqualToBytes((long) (Math.pow(1024.0, 2.0) * 10.0), "10m", "10mb", "10 mibibyte", "10 mibibytes");
+        assertStringsEqualToBytes(10L * 1024L * 1024L, "10m", "10mb", "10 mibibyte", "10 " + "mibibytes");
     }
 
     @Test
     public void testParseMebiBytes() {
-        assertStringsEqualToBytes((long) (Math.pow(1024.0, 2.0) * 10.0), "10m", "10mb", "10 mebibyte", "10 mebibytes");
+        assertStringsEqualToBytes(10L * 1024L * 1024L, "10m", "10mb", "10 mebibyte", "10 mebibytes");
     }
 
     @Test
     public void testParseGibiBytes() {
-        assertStringsEqualToBytes((long) (Math.pow(1024.0, 3.0) * 10.0), "10g", "10gb", "10 gibibyte", "10 gibibytes");
+        assertStringsEqualToBytes(10L * 1024L * 1024L * 1024L, "10g", "10gb", "10 gibibyte", "10 gibibytes");
     }
 
     @Test
     public void testParseTebiBytes() {
-        assertStringsEqualToBytes((long) (Math.pow(1024.0, 4.0) * 10.0), "10t", "10tb", "10 tebibyte", "10 tebibytes");
+        assertStringsEqualToBytes(10L * 1024L * 1024L * 1024L * 1024L, "10t", "10tb", "10 tebibyte", "10 tebibytes");
     }
 
     @Test
     public void testParsePebiBytes() {
-        assertStringsEqualToBytes((long) (Math.pow(1024.0, 5.0) * 10.0), "10p", "10pb", "10 pebibyte", "10 pebibytes");
+        assertStringsEqualToBytes(
+                10L * 1024L * 1024L * 1024L * 1024L * 1024L, "10p", "10pb", "10 pebibyte", "10 " + "pebibytes");
     }
 
     @Test