vec_sldb
Purpose
Shifts a double-wide vector left by given bits and returns the leftmost 128 bits of the shift result.
Note: This built-in function
is valid only when the -mcpu option is set to target Power10 processors.
Syntax
d=vec_sldb(a,b,c)Result and argument types
The following table describes the types of the returned value and the function arguments.
| d | a | b | c |
|---|---|---|---|
| vector signed char | vector signed char | vector signed char | const unsigned int |
| vector unsigned char | vector unsigned char | vector unsigned char | const unsigned int |
| vector signed short | vector signed short | vector signed short | const unsigned int |
| vector unsigned short | vector unsigned short | vector unsigned short | const unsigned int |
| vector signed int | vector signed int | vector signed int | const unsigned int |
| vector unsigned int | vector unsigned int | vector unsigned int | const unsigned int |
| vector signed long long | vector signed long long | vector signed long long | const unsigned int |
| vector unsigned long long | vector unsigned long long | vector unsigned long long | const unsigned int |
Note: The value of
c must be
between 0 and 7, inclusive.Result value
Let e be the concatenation of a and b, with a on the left.
Let e' be e shifted left by the number of bits specified by
c. Then d is set to the leftmost 128 bits of
e'.