RealView Compilation Tools Compiler Reference Guide - ARM ...

Compiler-specific Features
Syntax
unsigned char __clz(unsigned int val)
Where:
val
is an unsigned int.
Return value
The __clz intrinsic returns the number of leading zeros in val.
See also
• __builtin_clz on page 4-64
• CLZ on page 4-53 in the Assembler Guide.
4.7.11 __current_pc
This intrinsic enables you to determine the current value of the program counter at the
point in your program where the intrinsic is used.
Syntax
unsigned int __current_pc(void)
Return value
The __current_pc intrinsic returns the current value of the program counter at the point
in the program where the intrinsic is used.
See also
• __current_sp
• __return_address on page 4-83
• Legacy inline assembler that accesses sp, lr, or pc on page 6-27 in the Compiler
User Guide.
4.7.12 __current_sp
This intrinsic returns the value of the stack pointer at the current point in your program.
Syntax
unsigned int __current_sp(void)
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