31.17.8.3 Explanation of the EXP and EXPP Instructions

The EXP and EXPP instructions are exponential instructions. When the EXP instruction is executed, the EXP of S1 is calculated and the result is stored in D1.

The exponential value of S1 is stored in D1. The exponent of S1 is stored in D1. e to the power of S1 is output as a real value to D1.

Operation expression: D1 = eS1e is approximately 2.7182818284590 (real number).

The EXP and EXPP instructions are always conducted. When using the EXP and EXPP instructions, an error will occur if the variables specified in operands S1 and D1 are not the same type. Designate the same variable type in all operands S1 and D1.

Refer to the following for specifying a constant.

When operand D1 is a float variable

When 0f (zero and lower case "f") is input, the following values are interpreted as float values.

When operand D1 is a real variable

When 0r (zero and lower case "r") is input, the following values are interpreted as real values.

When calculating data in a specified array

Specify the array using Data [0] or Data [N] (N indicates an integer variable).

When operands S1 and D1 specify the entire array, an error will occur even if the specified variables are the same type.