This appendix presents the supported AltiVec data types and literals, which are supersets of those needed for strict conformance with the AltiVec specification.
The following table lists the supported AltiVec data types and the size and
possible values for each type.
Type | Interpretation of content | Range of values |
---|---|---|
vector unsigned char | 16 unsigned char | 0..255 |
vector signed char | 16 signed char | -128..127 |
vector bool char | 16 unsigned char | 0, 255 |
vector unsigned short | 8 unsigned short | 0..65535 |
vector unsigned short int | ||
vector signed short | 8 signed short | -32768..32767 |
vector signed short int | ||
vector bool short | 8 unsigned short | 0, 65535 |
vector bool short int | ||
vector unsigned int | 4 unsigned int | 0..232-1 |
vector unsigned long§ | ||
vector unsigned long int§ | ||
vector signed int | 4 signed int | -231..231-1 |
vector signed long§ | ||
vector signed long int§ | ||
vector bool int | 4 unsigned int | 0, 232-1 |
vector bool long§ | ||
vector bool long int§ | ||
vector float | 4 float | IEEE-754 values |
vector pixel | 8 unsigned short | 1/5/5/5 pixel |
The compiler considers any long vector data type compatible with the corresponding int vector type.
The following table shows the supported vector literals and how the
compiler interprets them to determine their values.
Syntax | Interpreted by the compiler as |
---|---|
(vector unsigned char)(unsigned int) | A set of 16 unsigned constants with a value specified by the integer constant expression. |
(vector unsigned char)(unsigned int, ..., unsigned int) | A set of 16 unsigned constants with a value specified by the 16 integer constant expressions. |
(vector signed char)(int) | A set of 16 signed constants with a value specified by the integer constant expression. |
(vector signed char)(int, ..., int) | A set of 16 signed constants with a value specified by the 16 integer constant expressions. |
(vector bool char)(unsigned int)§ | A set of 16 unsigned constants with a value specified by the integer constant expression. |
(vector bool char)(unsigned int, ..., unsigned int)§ | A set of 16 unsigned constants with a value specified by the 16 integer constant expressions. |
(vector unsigned short)(unsigned int) | A set of 8 unsigned constants with a value specified by the integer constant expression. |
(vector unsigned short)(unsigned int, ..., unsigned int) | A set of 8 unsigned constants with a value specified by the 8 integer constant expressions. |
(vector signed short)(int) | A set of 8 signed constants with a value specified by the integer constant expression. |
(vector signed short)(int, ..., int) | A set of 8 signed constants with a value specified by the 8 integer constant expressions. |
(vector bool short)(unsigned int)§ | A set of 8 unsigned constants with a value specified by the integer constant expression. |
(vector bool short)(unsigned int, ..., unsigned int)§ | A set of 8 unsigned constants with a value specified by the 8 integer constant expressions. |
(vector unsigned int)(unsigned int) | A set of 4 unsigned constants with a value specified by the integer constant expression. |
(vector unsigned int)(unsigned int, ..., unsigned int) | A set of 4 unsigned constants with a value specified by the 4 integer constant expressions. |
(vector signed int)(int) | A set of 4 signed constants with a value specified by the integer constant expression. |
(vector signed int)(int, ..., int) | A set of 4 signed constants with a value specified by the 4 integer constant expressions. |
(vector bool int)(unsigned int)§ | A set of 4 unsigned constants with a value specified by the integer constant expression. |
(vector bool int)(unsigned int, ..., unsigned int)§ | A set of 4 unsigned constants with a value specified by the 4 integer constant expressions. |
(vector float)(float) | A set of 4 floating-point constants with a value specified by the floating-point constant expression. |
(vector float)(float, float, float, float) | A set of 4 floating-point constants with a value specified by the 4 floating-point constant expressions. |
(vector pixel)(unsigned int)§ | A set of 8 unsigned constants with a value specified by the integer constant expression. |
(vector pixel)(unsigned int, ..., unsigned int)§ | A set of 8 unsigned constants with a value specified by the 8 integer constant expressions. |