public class org.apache.lucene.util.SmallFloat
minor version: 0
major version: 59
flags: flags: (0x0021) ACC_PUBLIC, ACC_SUPER
this_class: org.apache.lucene.util.SmallFloat
super_class: java.lang.Object
{
private static final int MAX_INT4;
descriptor: I
flags: (0x001a) ACC_PRIVATE, ACC_STATIC, ACC_FINAL
private static final int NUM_FREE_VALUES;
descriptor: I
flags: (0x001a) ACC_PRIVATE, ACC_STATIC, ACC_FINAL
static void <clinit>();
descriptor: ()V
flags: (0x0008) ACC_STATIC
Code:
stack=2, locals=0, args_size=0
0: ldc 2147483647
invokestatic org.apache.lucene.util.SmallFloat.longToInt4:(J)I
putstatic org.apache.lucene.util.SmallFloat.MAX_INT4:I
1: sipush 255
getstatic org.apache.lucene.util.SmallFloat.MAX_INT4:I
isub
putstatic org.apache.lucene.util.SmallFloat.NUM_FREE_VALUES:I
return
LocalVariableTable:
Start End Slot Name Signature
private void <init>();
descriptor: ()V
flags: (0x0002) ACC_PRIVATE
Code:
stack=1, locals=1, args_size=1
start local 0 0: aload 0
invokespecial java.lang.Object.<init>:()V
return
end local 0 LocalVariableTable:
Start End Slot Name Signature
0 1 0 this Lorg/apache/lucene/util/SmallFloat;
public static byte floatToByte(float, int, int);
descriptor: (FII)B
flags: (0x0009) ACC_PUBLIC, ACC_STATIC
Code:
stack=3, locals=6, args_size=3
start local 0 start local 1 start local 2 0: bipush 63
iload 2
isub
iload 1
ishl
istore 3
start local 3 1: fload 0
invokestatic java.lang.Float.floatToRawIntBits:(F)I
istore 4
start local 4 2: iload 4
bipush 24
iload 1
isub
ishr
istore 5
start local 5 3: iload 5
iload 3
if_icmpgt 8
4: iload 4
ifgt 6
5: iconst_0
goto 7
6: StackMap locals: int int int
StackMap stack:
iconst_1
7: StackMap locals:
StackMap stack: int
ireturn
8: StackMap locals:
StackMap stack:
iload 5
iload 3
sipush 256
iadd
if_icmplt 10
9: iconst_m1
ireturn
10: StackMap locals:
StackMap stack:
iload 5
iload 3
isub
i2b
ireturn
end local 5 end local 4 end local 3 end local 2 end local 1 end local 0 LocalVariableTable:
Start End Slot Name Signature
0 11 0 f F
0 11 1 numMantissaBits I
0 11 2 zeroExp I
1 11 3 fzero I
2 11 4 bits I
3 11 5 smallfloat I
MethodParameters:
Name Flags
f
numMantissaBits
zeroExp
public static float byteToFloat(byte, int, int);
descriptor: (BII)F
flags: (0x0009) ACC_PUBLIC, ACC_STATIC
Code:
stack=3, locals=4, args_size=3
start local 0 start local 1 start local 2 0: iload 0
ifne 1
fconst_0
freturn
1: StackMap locals:
StackMap stack:
iload 0
sipush 255
iand
bipush 24
iload 1
isub
ishl
istore 3
start local 3 2: iload 3
bipush 63
iload 2
isub
bipush 24
ishl
iadd
istore 3
3: iload 3
invokestatic java.lang.Float.intBitsToFloat:(I)F
freturn
end local 3 end local 2 end local 1 end local 0 LocalVariableTable:
Start End Slot Name Signature
0 4 0 b B
0 4 1 numMantissaBits I
0 4 2 zeroExp I
2 4 3 bits I
MethodParameters:
Name Flags
b
numMantissaBits
zeroExp
public static byte floatToByte315(float);
descriptor: (F)B
flags: (0x0009) ACC_PUBLIC, ACC_STATIC
Code:
stack=2, locals=3, args_size=1
start local 0 0: fload 0
invokestatic java.lang.Float.floatToRawIntBits:(F)I
istore 1
start local 1 1: iload 1
bipush 21
ishr
istore 2
start local 2 2: iload 2
sipush 384
if_icmpgt 6
3: iload 1
ifgt 4
iconst_0
goto 5
StackMap locals: int int
StackMap stack:
4: iconst_1
StackMap locals:
StackMap stack: int
5: ireturn
6: StackMap locals:
StackMap stack:
iload 2
sipush 640
if_icmplt 8
7: iconst_m1
ireturn
8: StackMap locals:
StackMap stack:
iload 2
sipush 384
isub
i2b
ireturn
end local 2 end local 1 end local 0 LocalVariableTable:
Start End Slot Name Signature
0 9 0 f F
1 9 1 bits I
2 9 2 smallfloat I
MethodParameters:
Name Flags
f
public static float byte315ToFloat(byte);
descriptor: (B)F
flags: (0x0009) ACC_PUBLIC, ACC_STATIC
Code:
stack=2, locals=2, args_size=1
start local 0 0: iload 0
ifne 1
fconst_0
freturn
1: StackMap locals:
StackMap stack:
iload 0
sipush 255
iand
bipush 21
ishl
istore 1
start local 1 2: iload 1
ldc 805306368
iadd
istore 1
3: iload 1
invokestatic java.lang.Float.intBitsToFloat:(I)F
freturn
end local 1 end local 0 LocalVariableTable:
Start End Slot Name Signature
0 4 0 b B
2 4 1 bits I
MethodParameters:
Name Flags
b
public static int longToInt4(long);
descriptor: (J)I
flags: (0x0009) ACC_PUBLIC, ACC_STATIC
Code:
stack=5, locals=5, args_size=1
start local 0 0: lload 0
lconst_0
lcmp
ifge 2
1: new java.lang.IllegalArgumentException
dup
new java.lang.StringBuilder
dup
ldc "Only supports positive values, got "
invokespecial java.lang.StringBuilder.<init>:(Ljava/lang/String;)V
lload 0
invokevirtual java.lang.StringBuilder.append:(J)Ljava/lang/StringBuilder;
invokevirtual java.lang.StringBuilder.toString:()Ljava/lang/String;
invokespecial java.lang.IllegalArgumentException.<init>:(Ljava/lang/String;)V
athrow
2: StackMap locals:
StackMap stack:
bipush 64
lload 0
invokestatic java.lang.Long.numberOfLeadingZeros:(J)I
isub
istore 2
start local 2 3: iload 2
iconst_4
if_icmpge 5
4: lload 0
invokestatic java.lang.Math.toIntExact:(J)I
ireturn
5: StackMap locals: int
StackMap stack:
iload 2
iconst_4
isub
istore 3
start local 3 6: lload 0
iload 3
lushr
invokestatic java.lang.Math.toIntExact:(J)I
istore 4
start local 4 7: iload 4
bipush 7
iand
istore 4
8: iload 4
iload 3
iconst_1
iadd
iconst_3
ishl
ior
istore 4
9: iload 4
ireturn
end local 4 end local 3 end local 2 end local 0 LocalVariableTable:
Start End Slot Name Signature
0 10 0 i J
3 10 2 numBits I
6 10 3 shift I
7 10 4 encoded I
MethodParameters:
Name Flags
i
public static final long int4ToLong(int);
descriptor: (I)J
flags: (0x0019) ACC_PUBLIC, ACC_STATIC, ACC_FINAL
Code:
stack=4, locals=6, args_size=1
start local 0 0: iload 0
bipush 7
iand
i2l
lstore 1
start local 1 1: iload 0
iconst_3
iushr
iconst_1
isub
istore 3
start local 3 2: iload 3
iconst_m1
if_icmpne 5
3: lload 1
lstore 4
start local 4 4: goto 6
end local 4 5: StackMap locals: long int
StackMap stack:
lload 1
ldc 8
lor
iload 3
lshl
lstore 4
start local 4 6: StackMap locals: long
StackMap stack:
lload 4
lreturn
end local 4 end local 3 end local 1 end local 0 LocalVariableTable:
Start End Slot Name Signature
0 7 0 i I
1 7 1 bits J
2 7 3 shift I
4 5 4 decoded J
6 7 4 decoded J
MethodParameters:
Name Flags
i
public static byte intToByte4(int);
descriptor: (I)B
flags: (0x0009) ACC_PUBLIC, ACC_STATIC
Code:
stack=5, locals=1, args_size=1
start local 0 0: iload 0
ifge 2
1: new java.lang.IllegalArgumentException
dup
new java.lang.StringBuilder
dup
ldc "Only supports positive values, got "
invokespecial java.lang.StringBuilder.<init>:(Ljava/lang/String;)V
iload 0
invokevirtual java.lang.StringBuilder.append:(I)Ljava/lang/StringBuilder;
invokevirtual java.lang.StringBuilder.toString:()Ljava/lang/String;
invokespecial java.lang.IllegalArgumentException.<init>:(Ljava/lang/String;)V
athrow
2: StackMap locals:
StackMap stack:
iload 0
getstatic org.apache.lucene.util.SmallFloat.NUM_FREE_VALUES:I
if_icmpge 4
3: iload 0
i2b
ireturn
4: StackMap locals:
StackMap stack:
getstatic org.apache.lucene.util.SmallFloat.NUM_FREE_VALUES:I
iload 0
getstatic org.apache.lucene.util.SmallFloat.NUM_FREE_VALUES:I
isub
i2l
invokestatic org.apache.lucene.util.SmallFloat.longToInt4:(J)I
iadd
i2b
ireturn
end local 0 LocalVariableTable:
Start End Slot Name Signature
0 5 0 i I
MethodParameters:
Name Flags
i
public static int byte4ToInt(byte);
descriptor: (B)I
flags: (0x0009) ACC_PUBLIC, ACC_STATIC
Code:
stack=4, locals=4, args_size=1
start local 0 0: iload 0
invokestatic java.lang.Byte.toUnsignedInt:(B)I
istore 1
start local 1 1: iload 1
getstatic org.apache.lucene.util.SmallFloat.NUM_FREE_VALUES:I
if_icmpge 3
2: iload 1
ireturn
3: StackMap locals: int
StackMap stack:
getstatic org.apache.lucene.util.SmallFloat.NUM_FREE_VALUES:I
i2l
iload 1
getstatic org.apache.lucene.util.SmallFloat.NUM_FREE_VALUES:I
isub
invokestatic org.apache.lucene.util.SmallFloat.int4ToLong:(I)J
ladd
lstore 2
start local 2 4: lload 2
invokestatic java.lang.Math.toIntExact:(J)I
ireturn
end local 2 end local 1 end local 0 LocalVariableTable:
Start End Slot Name Signature
0 5 0 b B
1 5 1 i I
4 5 2 decoded J
MethodParameters:
Name Flags
b
}
SourceFile: "SmallFloat.java"