pub unsafe extern "C" fn vprintf(
format: *const u8,
valist: *const c_void,
) -> i32🔬This is a nightly-only experimental API. (
stdarch_nvptx #111199)Available on
target_arch="nvptx64" only.Expand description
Print formatted output from a kernel to a host-side output stream.
Syscall arguments:
status: The status value that is returned byvprintf.format: A pointer to the format specifier input (uses commonprintfformat).valist: A pointer to the valist input.
#[repr(C)]
struct PrintArgs(f32, f32, f32, i32);
vprintf(
"int(%f + %f) = int(%f) = %d\n".as_ptr(),
transmute(&PrintArgs(a, b, a + b, (a + b) as i32)),
);Sources: Programming Guide, PTX Interoperability.