decimal

问题 I am considering writing two limited precision alternatives to BigDecimal, namely DecimalInt and DecimalLong. These would be capable of dealing with numbers within the real bounds of int and long with an arbitrary number of decimal places, creatable in both mutable and immutable form. My plan is to make DecimalInt support +/-999,999,999 to +/- 0.999999999 and DecimalLong the same, but with up to 18 digits. This would be done by maintaining a decimal digit count value of 0-9 for DecimalInt and

问题 Is there a way to set the "minimum" number of decimal places that a std::ostream will output? For example, say I have two unknown double variables that I want to print (values added here for the sake of illustration): double a = 0; double b = 0.123456789; I can set my maximum decimal precision so that I output b exactly std::cout << std::setprecision(9) << b << std::endl; >>> 0.123456789 Is there a way to set a "minimum" precision (a minimum number of decimal places), while retaining the

问题 Is there a way to set the "minimum" number of decimal places that a std::ostream will output? For example, say I have two unknown double variables that I want to print (values added here for the sake of illustration): double a = 0; double b = 0.123456789; I can set my maximum decimal precision so that I output b exactly std::cout << std::setprecision(9) << b << std::endl; >>> 0.123456789 Is there a way to set a "minimum" precision (a minimum number of decimal places), while retaining the

问题 My scenario is to check whether a field accepts range from 0.01 to 25000 .. it can be decimal value . What is way to do it in karate framework.. I used below regex which is not correct regex [.0-9]* 回答1: Just multiply by 1 to convert a string to a number * def foo = '0.2' * assert (foo * 1) < 0.3 Also please read: https://github.com/intuit/karate#type-conversion 来源： https://stackoverflow.com/questions/58630846/validate-the-float-value-range-in-karate-framework

问题 My scenario is to check whether a field accepts range from 0.01 to 25000 .. it can be decimal value . What is way to do it in karate framework.. I used below regex which is not correct regex [.0-9]* 回答1: Just multiply by 1 to convert a string to a number * def foo = '0.2' * assert (foo * 1) < 0.3 Also please read: https://github.com/intuit/karate#type-conversion 来源： https://stackoverflow.com/questions/58630846/validate-the-float-value-range-in-karate-framework

问题 As the title of the question, I need to validate regex using the following values​​: (Maximum 2 decimal places, and 9 integers) with an optional percent symbol. Valid: 10% 0% 1111111.12% 15.2% 10 2.3 Invalid: .% 12.% .02% % 123456789123.123 I tryed: ^[0-9]{0,9}([\.][0-9]{0,2})\d[\%]{0,1}?$ But It does not work as I want. 回答1: try this ^\d{1,9}(\.\d{1,2})?%?$ I tested over rubular and it is ok for your set of example. 回答2: Try this: ^[0-9]{1,9}([\.][0-9]{1,2})?[\%]?$ 来源： https://stackoverflow

问题 I tried to compute the following by setting getcontext().prec = 800 . >>> from decimal import * >>> getcontext().prec = 800 >>> Decimal(22.0) / Decimal ( 10.0) - Decimal ( 0.2 ) Decimal('1.999999999999999988897769753748434595763683319091796875') >>> But the expected result is 2 . Where am I doing wrong? 回答1: When you construct a Decimal from a floating-point number, you get the exact value of the floating-point number, which may not precisely match the decimal value because that's how

问题 I tried to compute the following by setting getcontext().prec = 800 . >>> from decimal import * >>> getcontext().prec = 800 >>> Decimal(22.0) / Decimal ( 10.0) - Decimal ( 0.2 ) Decimal('1.999999999999999988897769753748434595763683319091796875') >>> But the expected result is 2 . Where am I doing wrong? 回答1: When you construct a Decimal from a floating-point number, you get the exact value of the floating-point number, which may not precisely match the decimal value because that's how

问题 I tried to compute the following by setting getcontext().prec = 800 . >>> from decimal import * >>> getcontext().prec = 800 >>> Decimal(22.0) / Decimal ( 10.0) - Decimal ( 0.2 ) Decimal('1.999999999999999988897769753748434595763683319091796875') >>> But the expected result is 2 . Where am I doing wrong? 回答1: When you construct a Decimal from a floating-point number, you get the exact value of the floating-point number, which may not precisely match the decimal value because that's how

问题 I tried to compute the following by setting getcontext().prec = 800 . >>> from decimal import * >>> getcontext().prec = 800 >>> Decimal(22.0) / Decimal ( 10.0) - Decimal ( 0.2 ) Decimal('1.999999999999999988897769753748434595763683319091796875') >>> But the expected result is 2 . Where am I doing wrong? 回答1: When you construct a Decimal from a floating-point number, you get the exact value of the floating-point number, which may not precisely match the decimal value because that's how