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activation_descriptor.rs
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activation_descriptor.rs
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//! Defines a Activation Descriptor.
//!
//! A Activation Descriptor is used to hold information about the rule,
//! which describes how to transform the data.
use super::{Error, API};
use crate::ffi::*;
#[derive(Debug, Clone)]
/// Describes a ActivationDescriptor.
pub struct ActivationDescriptor {
id: cudnnActivationDescriptor_t,
}
impl Drop for ActivationDescriptor {
#[allow(unused_must_use)]
fn drop(&mut self) {
API::destroy_activation_descriptor(*self.id_c());
}
}
impl ActivationDescriptor {
/// Initializes a new CUDA cuDNN Activation Descriptor.
pub fn new(mode: cudnnActivationMode_t) -> Result<ActivationDescriptor, Error> {
let generic_activation_desc = API::create_activation_descriptor()?;
API::set_activation_descriptor(
generic_activation_desc,
mode,
cudnnNanPropagation_t::CUDNN_NOT_PROPAGATE_NAN, // FIXME check if this makes sense
::std::f64::MAX, // FIXME make this public API
)?;
Ok(ActivationDescriptor::from_c(generic_activation_desc))
}
/// Initializes a new CUDA cuDNN Activation Descriptor from its C type.
pub fn from_c(id: cudnnActivationDescriptor_t) -> ActivationDescriptor {
ActivationDescriptor { id }
}
/// Returns the CUDA cuDNN Activation Descriptor as its C type.
pub fn id_c(&self) -> &cudnnActivationDescriptor_t {
&self.id
}
}