Intrinsic Functions for Renesas Microprocessors
9/7/2007
The Renesas SH-4 microprocessor includes a number of functions that you can use intrinsically for faster programs. These functions aid mathematical computations.
Programs that use intrinsic functions do not have the overhead of function calls, but they can be larger because of the additional code created.
To replace functions with their intrinsic (inline) forms, use the /Oi (Generate Intrinsic Functions) option or the #pragma intrinsic.
The following table shows SH-4 microprocessor assembly language functions implemented as intrinsic functions.
| SH-4 instruction | Description |
|---|---|
Computes the summation of two vectors. |
|
Computes the inner product of a pair of three- or four-dimensional vectors with the "w" coordinate forced to 0. |
|
Computes the inner product of a pair of three- or four-dimensional vectors with the "w" coordinate forced to 1. |
|
Computes the inner product of a pair of four-dimensional vectors. |
|
Multiplies two float values and adds to a third float value. |
|
Loads a 4x4 matrix into the extended floating-point register bank. |
|
Moves with cache block allocation. |
|
Multiplies a 4x4 matrix by a 4x4 matrix. |
|
Stores the extended floating-point register bank into a 4x4 matrix. |
|
Multiplies a 4x4 matrix by a 4x4 matrix. |
|
Multiplies a three-dimensional vector by a 3x3 matrix. |
|
Multiplies a four-dimensional vector by a 4x4 matrix. |
|
Multiplies a three-dimensional vector by a 3x3 matrix. |
|
Multiplies a four-dimensional vector by a 4x4 matrix. |