Language and Conventions Overview | Data Types
数值数据包括常量和变量。在GRIP数值常量可能不包含空格,必须完全包含在程序的一个行。
数值常量可能有以下两种格式之一:
mantissa
mantissa E (exponent)
注意:不支持READ语句指数数值格式。
尾数是一个数字组成的一个数字或更多(0至9)组成。这个数字可以包括一个小数点,并且也可以由一个前缀+或 - 符号(如果没有就表示一个正数)。有效的数字的尾数的最大数量是15。
The exponent (E) represents the power to which the number ten is to be raised. The exponent may contain a maximum of two digits and may also be prefixed by a + or - sign (if no sign exists a positive number is assumed). The approximate range of the exponent is from -79 to +75.
The resulting value can be thought of as:
(numerical constant = mantissa times ten to the power of "E").
The approximate magnitude of a numerical constant ranges from:
(5.4 * 10-79 to 7.2 * 1075).
The following values are shown raised to an exponent with their equivalent, non-exponential values.
With Exponents |
Without Exponents |
.123456789E9 |
123456789. |
.05E-2 |
.0005 |
+5E+02 |
500. |
.005E3 |
5. |