CODEWITHSUNDEEP
java
user3265048
user3265048

Reputation: 367

Floating point literal syntax

Following these two lines:

float f1 = 2E10f;
float f2 = 0x2P10f;

The output is:

2.0E10
2048.0

Respectively.

So my question is:

What is E10 and P10 equivalent to in decimals?

I think E10 equivalent to 1010, is that true?

Upvotes: 1

Views: 439

Answers (2)

Michal Brašna
Michal Brašna

Reputation: 2323

E and P are exponent indicators in floating point literals. You can also express number in decimal (base 10) or hexadecimal (base 16).

  • 2E10f is 2*10^10 (decimal base with exponent indicator)
  • 0x2P10f is 2*2^10 (hexadecimal base with binary exponent indicator)

Upvotes: 2

Maroun
Maroun

Reputation: 95958

I think E10 equivalent to 10^10(10 to the power of 10), is that true?

Yes. Proof:

Use BigDecimal#toPlainString:

System.out.println(new BigDecimal(2.0E10).toPlainString());

Output will be 20000000000.

Meaning that E10 is 1010. ∎

Upvotes: 0

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