Developer Guide and Reference

Contents

Debug Operations

The debug operations do not map to any compiler intrinsics for MMX™ technology or Intel® Streaming SIMD Extensions . They are provided for debugging programs only. Use of these operations may result in loss of performance, so you should not use them outside of debugging.

Output Operations

The two single, double-precision floating-point values of
A
are placed in the output buffer and printed in decimal format as follows:
cout << F64vec2 A;
"[1]:A1 [0]:A0"
Corresponding intrinsics: none
The four, single-precision floating-point values of
A
are placed in the output buffer and printed in decimal format as follows:
cout << F32vec4 A;
"[3]:A3 [2]:A2 [1]:A1 [0]:A0"
Corresponding intrinsics: none
The lowest, single-precision floating-point value of
A
is placed in the output buffer and printed.
cout << F32vec1 A;
Corresponding intrinsics: none

Element Access Operations

double d = F64vec2 A[int i]
Read one of the two, double-precision floating-point values of
A
without modifying the corresponding floating-point value. Permitted values of
i
are 0 and 1. For example:
If DEBUG is enabled and
i
is not one of the permitted values (0 or 1), a diagnostic message is printed and the program aborts.
double d = F64vec2 A[1];
Corresponding intrinsics: none
Read one of the four, single-precision floating-point values of
A
without modifying the corresponding floating point value. Permitted values of
i
are 0, 1, 2, and 3. For example:
float f = F32vec4 A[int i]
If DEBUG is enabled and
i
is not one of the permitted values (0-3), a diagnostic message is printed and the program aborts.
float f = F32vec4 A[2];
Corresponding intrinsics: none

Element Assignment Operations

F64vec4 A[int i] = double d;
Modify one of the two, double-precision floating-point values of
A
. Permitted values of
int i
are 0 and 1. For example:
F32vec4 A[1] = double d;
F32vec4 A[int i] = float f;
Modify one of the four, single-precision floating-point values of
A
. Permitted values of
int i
are 0, 1, 2, and 3. For example:
If DEBUG is enabled and
int i
is not one of the permitted values (0-3), a diagnostic message is printed and the program aborts.
F32vec4 A[3] = float f;
Corresponding intrinsics: none.

Product and Performance Information

1

Intel's compilers may or may not optimize to the same degree for non-Intel microprocessors for optimizations that are not unique to Intel microprocessors. These optimizations include SSE2, SSE3, and SSSE3 instruction sets and other optimizations. Intel does not guarantee the availability, functionality, or effectiveness of any optimization on microprocessors not manufactured by Intel. Microprocessor-dependent optimizations in this product are intended for use with Intel microprocessors. Certain optimizations not specific to Intel microarchitecture are reserved for Intel microprocessors. Please refer to the applicable product User and Reference Guides for more information regarding the specific instruction sets covered by this notice.

Notice revision #20110804