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2.5.4 Variadic Intrinsics ¶

The following functions are a collection of variadic intrinsics, available by importing the core.stdc.stdarg module.

Template: void core.stdc.stdarg.va_arg (T)(ref va_list ap, ref T parmn) ¶

Retrieve and store in parmn the next value from the va_list ap that is of type T.

This intrinsic is equivalent to writing the following:

parmn = __builtin_va_arg (ap, T);

Template: T core.stdc.stdarg.va_arg (T)(ref va_list ap) ¶

Retrieve and return the next value from the va_list ap that is of type T.

This intrinsic is equivalent to writing the following:

result = __builtin_va_arg (ap, T);

Function: void core.stdc.stdarg.va_copy (out va_list dest, va_list src) ¶

Make a copy of src in its current state and store to dest.

This intrinsic is the same as the GCC built-in function __builtin_va_copy.

Function: void core.stdc.stdarg.va_end (va_list ap) ¶

Destroy ap so that it is no longer useable.

This intrinsic is the same as the GCC built-in function __builtin_va_end.

Template: void core.stdc.stdarg.va_start (T)(out va_list ap, ref T parmn) ¶

Initialize ap so that it can be used to access the variable arguments that follow the named argument parmn.

This intrinsic is the same as the GCC built-in function __builtin_va_start.