vector

clauses

Is one of the following:

processor clause, in the form processor(cpuid): this clause creates a vector version of the function for the given target processor (cpuid). See cpu_specific for a list of supported values. The default processor is determined by the implicit or explicit process- or architecture-specific flag in the compiler command line.

vector length clause, in the form vectorlength(n), where n is a vectorlength (vl) and must be an integer must be 2, 4, 8, or 16: this clause tells the compiler that each routine invocation at the call site should execute the computation equivalent to n times the scalar function execution.

linear clause, in the form linear(param1:step1 [, param2:step2]…) where param is a scalar variable and step is a compile-time integer constant expression: this clause tells the compiler that for each consecutive invocation of the routine in a serial execution, the value of param1 is incremented by step , param2 is incremented by step2 , and so on. If more than one step is specified for a particular variable, a compile-time error occurs. Multiple linear clauses are merged as a union.

uniform clause, in the form uniform(param [, param,]…), where param is a formal parameter of the specified function: this clause tells the compiler that the values of the specified arguments can be broadcast to all iterations as a performance optimization.

mask clause, in the form [no]mask: this clause tells the compiler to generate a masked vector version of the routine