Floating-Point Math Instructions

Overview of Floating-Point Math

Description

The IEEE 32-bit floating-point numbers belong to the data type called REAL. You can use the floating-point math instructions to perform the following math instructions using two 32-bit IEEE floating-point numbers:

·       ADD_R :  Add Real

·       SUB_R :  Subtract Real

·       MUL_R :  Multiply Real

·       DIV_R :    Divide Real

You can carry out the following operations with one 32-bit IEEE floating-point number:

·       Form the absolute value (ABS) of a floating-point number

·       Form the square (SQR) or square root (SQRT) of a floating-point number

·       Form the natural logarithm (LN) of a floating-point number

·       Form the exponential value of a floating-point number (EXP) to base e (= 2.71828...)

·       Form the following trigonometric functions of an angle, represented as a 32-bit floating-point number:

-       sine (SIN) and arc sine (ASIN)

-       cosine (COS) and arc cosine  (ACOS)

-       tangent (TAN) and arc tangent (ATAN)

See also Evaluating the Bits of the Status Word with Floating-Point Instructions.