value.h File Reference

Scalar value and autograd graph API. More...

#include <stdbool.h>
#include <stddef.h>

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Data Structures
struct	mg_graph_checkpoint
	Snapshot of a graph's allocation state. More...

Typedefs
typedef struct mg_graph	mg_graph
	Opaque owner of a linked list of mg_value nodes.
typedef struct mg_value	mg_value
	Opaque scalar node in a computation graph.

Functions
mg_graph *	mg_graph_new (void)
	Create a new graph.
void	mg_graph_free (mg_graph *g)
	Free a graph and all values it owns.
void	mg_zero_grad (mg_graph *g)
	Set all mg_value gradients in a graph to zero.
mg_graph_checkpoint	mg_graph_save (const mg_graph *g)
	Create a snapshot of the graph's current allocation state.
void	mg_graph_restore (mg_graph *g, mg_graph_checkpoint checkpoint)
	Restore the graph to a previous checkpoint.
float	mg_data (const mg_value *v)
	Get the scalar data of a value.
float	mg_grad (const mg_value *v)
	Get the gradient of a value.
void	mg_set_data (mg_value *v, float data)
	Set the scalar data of a value.
void	mg_set_grad (mg_value *v, float grad)
	Set the gradient of a value.
mg_value *	mg_scalar (mg_graph *g, float data)
	Create a new scalar value.
mg_value *	mg_add (mg_graph *g, mg_value *a, mg_value *b)
	Add two values.
mg_value *	mg_sub (mg_graph *g, mg_value *a, mg_value *b)
	Subtract one value from another.
mg_value *	mg_mul (mg_graph *g, mg_value *a, mg_value *b)
	Multiply two values.
mg_value *	mg_div (mg_graph *g, mg_value *a, mg_value *b)
	Divide one value by another.
mg_value *	mg_pow (mg_graph *g, mg_value *a, mg_value *b)
	Raise one value to the power of another.
mg_value *	mg_neg (mg_graph *g, mg_value *a)
	Negate a value.
mg_value *	mg_square (mg_graph *g, mg_value *a)
	Square a value.
mg_value *	mg_relu (mg_graph *g, mg_value *a)
	Apply the ReLU activation function to a value.
mg_value *	mg_tanh (mg_graph *g, mg_value *a)
	Apply the tanh activation function to a value.
mg_value *	mg_exp (mg_graph *g, mg_value *a)
	Apply the exponential function to a value.
bool	mg_backward (mg_graph *g, mg_value *out)
	Compute gradients for all values that contribute to an output value.

Detailed Description

Scalar value and autograd graph API.