kest_expression.h

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#ifndef EXPR_H_
#define EXPR_H_
 
#define KEST_EXPR_FORM_ATOMIC   0
#define KEST_EXPR_FORM_UNARY_OP 1
#define KEST_EXPR_FORM_UNARY_FN 2
#define KEST_EXPR_FORM_INFIX_OP 3
#define KEST_EXPR_FORM_NORM  4
 
#define KEST_EXPR_CONST     0
#define KEST_EXPR_REF       1
#define KEST_EXPR_NEG       2
#define KEST_EXPR_ADD       3
#define KEST_EXPR_SUB       4
#define KEST_EXPR_MUL       5
#define KEST_EXPR_DIV       6
#define KEST_EXPR_ABS       7
#define KEST_EXPR_SQR       8
#define KEST_EXPR_SQRT  9
#define KEST_EXPR_EXP       10
#define KEST_EXPR_LN        11
#define KEST_EXPR_POW       12
#define KEST_EXPR_SIN       13
#define KEST_EXPR_SINH  14
#define KEST_EXPR_COS       15
#define KEST_EXPR_COSH  16
#define KEST_EXPR_TAN       17
#define KEST_EXPR_TANH  18
#define KEST_EXPR_ASIN  19
#define KEST_EXPR_ACOS  20
#define KEST_EXPR_ATAN  21
 
#define KEST_EXPR_TYPE_MAX_VAL KEST_EXPR_ATAN
 
#define KEST_EXPR_REC_MAX_DEPTH 128
 
//#define KEST_BOUNDS_CHECK_VERBOSE
 
typedef struct kest_expression
{
    int type;
    int constant;
    int cached;
    float cached_val;
    union {
        float val_float;
        char *ref_name;
        struct kest_expression **sub_exprs;
    } val;
} kest_expression;
 
DECLARE_PTR_LIST(kest_expression);
 
kest_expression kest_expression_const(float v);
kest_expression *new_m_expression_const(float v);
kest_expression *new_m_expression_reference(char *ref_name);
kest_expression *new_m_expression_unary(int unary_type, kest_expression *rhs);
kest_expression *new_m_expression_binary(int binary_type, kest_expression *arg_1, kest_expression *arg_2);
 
int kest_expression_references_param(kest_expression *expr, kest_parameter *param);
 
float kest_expression_evaluate(kest_expression *expr, kest_expr_scope *scope);
 
int kest_expression_is_constant(kest_expression *expr);
 
float kest_expression_min(kest_expression *expr, kest_parameter_pll *params);
float kest_expression_max(kest_expression *expr, kest_parameter_pll *params);
 
int kest_expression_detect_constants(kest_expression *expr);
 
typedef struct kest_interval
{
    float a;
    float b;
} kest_interval;
 
kest_interval kest_interval_real_line();
kest_interval kest_interval_ab(float a, float b);
kest_interval kest_interval_a_(float a);
kest_interval kest_interval__b(float b);
kest_interval kest_interval_singleton(float v);
 
kest_interval kest_expression_compute_range(kest_expression *expr, kest_expr_scope *scope);
 
char *kest_expression_type_to_str(int type);
int kest_expression_print(kest_expression *expr);
const char *kest_expression_to_string(kest_expression *expr);
 
extern kest_expression kest_expression_standard_gain_min;
extern kest_expression kest_expression_standard_gain_max;
extern kest_expression kest_expression_zero;
extern kest_expression kest_expression_one;
extern kest_expression kest_expression_minus_one;
extern kest_expression kest_expression_pi;
extern kest_expression kest_expression_e;
extern kest_expression kest_expression_sample_rate;
extern kest_expression kest_expression_int_max;
extern kest_expression kest_expression_int_min;
extern kest_expression kest_expression_freq_max;
 
typedef struct {
    const char *name;
    kest_expression *expr;
} kest_named_expression;
 
DECLARE_LINKED_PTR_LIST(kest_named_expression);
 
#endif