Conversion from Long to Double in Java

Question

Is there any way to convert a Long data type to Double or double   For example  I need to convert 15552451L to a double data type

User · Answer

Are you looking for the binary conversion?

double result = Double.longBitsToDouble(15552451L);

This will give you the double with the same bit pattern as the long literal.

Binary or hexadecimal literals will come in handy, here. Here are some examples.

double nan = Double.longBitsToDouble(0xfff0000000000001L);
double positiveInfinity = Double.longBitsToDouble(0x7ff0000000000000L);
double positiveInfinity = Double.longBitsToDouble(0xfff0000000000000L);

(See Double.longBitsToDouble(long))

You also can get the long back with

long bits = Double.doubleToRawLongBits(Double.NaN);

(See Double.doubleToRawLongBits(double))

User · Answer

You can try something like this   long x   somevalue   double y   Double longBitsToDouble x

User · Answer

I think it is good for you   BigDecimal valueOf  LONG VALUE   doubleValue    How about this code   D

User · Answer

Long i   1000000  String s   i       Double d   Double parseDouble s   Float f   Float parseFloat s     This way we can convert Long type to Double or Float or Int without any problem because it s easy to convert string value to Double or Float or Int

User · Answer

You could simply do    double d    double 15552451L    Or you could get double from Long object as    Long l   new Long 15552451L   double d   l doubleValue

User · Answer

Simple casting   double d    double 15552451L

User · Answer

As already mentioned  you can simply cast long to double  But be careful with long to double conversion because long to double is a narrowing conversion in java    Conversion from type double to type long requires a nontrivial translation from a 64-bit floating-point value to the 64-bit integer representation  Depending on the actual run-time value  information may be lost   e g  following program will print 1 not 0      long number   499999999000000001L      double converted    double  number      System out println  number -  long  converted

User · Answer

What do you mean by a long date type   You can cast a long to a double   double d    double  15552451L

[java] Conversion from Long to Double in Java

Examples related to java

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