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1 representation of floating point numbers
Typically, we can use the following format to represent floating-point numbers
S
P
M
where S is the sign bit, p is the order, M is the mantissa
For IBM-PC, the
1, take the whole function (ceil up, floor down rounding)The first way:Select $ / - from dual -- rounding trunc (1.9) = 1The second waySelect ceil (66.6) N1,floor (66.6 from dual;2, exponentiation (Power) and square root (sqrt)Select Power (3,2)
When processing some data, we hope to use the "Rounding" method, but C # uses the "four homes, six homes, five into two" method, as shown in the following example, the result is obtained using "four homes, six homes, and five into two:
Code
1 representation of floating point numbers
Typically, we can use the following format to represent floating-point numbers
S
P
M
where S is the sign bit, p is the order, M is the mantissa
For IBM-PC, the
When processing some data, we hope to use the "Rounding" method, but C # uses the "four homes, six homes, five into two" method, as shown in the following example, the result is obtained using "four homes, six homes, and five into two:
double d1 =
When processing some data, we hope to use the "Rounding" method, but C # uses the "four homes, six homes, five into two" method, as shown in the following example, the result is obtained using "four homes, six homes, and five into two:
Double d1 =
When processing some data, we hope to use the "Rounding" method, but C # uses the "four homes, six homes, five into two" method, as shown in the following example, the result is obtained using "four homes, six homes, and five into two:
double
PHP converts amount numbers to Chinese capitals
echo Tochinesenumber (1234567890);/to pick up the million thousand thousands of million Wu Qi Ba bai nine to collect round
function Tochinesenumber ($money) {
$money = round ($ money,2);
PHP converts amount numbers to Chinese capitals,
PHP converts amount numbers to Chinese capitals
echo Tochinesenumber (1234567890);//One to pick up the hundred billion three thousand of thousands of wood to pick up the land million BA Hundred nine
An integer method for rounding, rounding, ignoring decimals, etc. in one method
PHP to take the integer function commonly used four methods, the following collection of four functions, often used to take the whole function, today a small sum!
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