Description
The logical unary operator not (!) operates on all scalar and vector built-in types. For built-in vector types, the operators are applied component-wise.
The result is a scalar signed integer of type int if the source operands
are scalar and a vector signed integer type of the same size as the source
operands if the source operands are vector types.
Vector source operands of type charn and ucharn return a
charn result; vector source operands of type
_halfn [1],
shortn and
ushortn return a shortn result; vector source operands of type
intn, uintn and floatn return an intn result; vector
source operands of type longn, ulongn and doublen return a
longn result.
For scalar types, the logical unary operator shall return 0 if the value of its operand compares unequal to 0, and return 1 if the value of its operand compares equal to 0. For vector types, the unary operator shall return 0 if the value of its operand compares unequal to 0, and return -1 (i.e. all bits set) if the value of its operand compares equal to 0.
Document Notes
For more information, see the OpenCL C Specification
This page is extracted from the OpenCL C Specification. Fixes and changes should be made to the Specification, not directly.