php double precision

PHP floating point precision problem summary, php floating point precision. PHP floating point number precision problem summary, php floating point precision 1, PHP floating point precision loss first look at the following code: Copy the code: $ f0.5

Let's take a look at the following code:$ F = 0.57;Echo intval ($ f * 100); // 56The result may be a little unexpected. PHP follows IEEE 754 dual precision:Floating point number, expressed in 64-bit dual precision, with one-bit sign bit (E), 11

Engaged in the financial industry, capital operations frequently, here I met the pit .... Slightly inattentive, the user funds may lose hundreds of thousands of, even more terrible ... Go directly to the example:Javascript0.1 + 0.2 Why isn't it

This article is mainly to share with you PHP to achieve high-precision computing, engaged in the financial industry, capital operations frequently, here I met the pit .... Slightly inattentive, the user funds may lose hundreds of thousands of, even

1. Recently I have made some sqlite3 tasks, defining a blob-type field and saving double-precision floating point numbers here, so something strange happened. The double-precision floating point number is 13.46. The hexadecimal value is 402AEB851EB85

PHP floating point Precision problem summary, php floating point Precision I. Precision loss of PHP floating point numbers Let's take a look at the following code:Copy codeThe Code is as follows:$ F = 0.57;Echo intval ($ f * 100); // 56 The result

1. Recently doing some sqlite3 things, defined a blob type of field, want to put double-precision floating point in here, so the strange thing happened. Double precision floating point number 13.46, hex 402A EB85 1eb8 51EC, but sqlite inside data is

This article mainly introduces the PHP floating point Precision problem summary, this article discusses the PHP floating point precision loss problem emphatically, uses the three paragraph different way to explain this question formation reason and

In the operation of floating-point numbers in PHP, a hole was encountered, which did not get the expected result, as follows: $a = 69.1;$b = $a *100;$c = $b-6910; What do you think the value of $c is? The value $c output is -9.0949470177293E-13.

This article is mainly to share with you how PHP handles high-precision computing functions, the main and we share the two methods, hope to help everyone. Method 1: PHP provides a binary calculator (binary Calculator) for any mathematical