algorithm Struct Reference

#include <expmed.h>

Collaboration diagram for algorithm:

Data Fields
struct mult_cost	cost
short	ops
enum alg_code	op [MAX_BITS_PER_WORD]
char	log [MAX_BITS_PER_WORD]

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Detailed Description

This structure records a sequence of operations.
   `ops' is the number of operations recorded.
   `cost' is their total cost.
   The operations are stored in `op' and the corresponding
   logarithms of the integer coefficients in `log'.

   These are the operations:
   alg_zero             total := 0;
   alg_m                total := multiplicand;
   alg_shift            total := total * coeff
   alg_add_t_m2         total := total + multiplicand * coeff;
   alg_sub_t_m2         total := total - multiplicand * coeff;
   alg_add_factor       total := total * coeff + total;
   alg_sub_factor       total := total * coeff - total;
   alg_add_t2_m         total := total * coeff + multiplicand;
   alg_sub_t2_m         total := total * coeff - multiplicand;

   The first operand must be either alg_zero or alg_m.   

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Field Documentation

struct mult_cost algorithm::cost

Referenced by choose_mult_variant(), expmed_mult_highpart(), mult_by_coeff_cost(), and synth_mult().

char algorithm::log[MAX_BITS_PER_WORD]

Referenced by expand_mult_const(), and synth_mult().

enum alg_code algorithm::op[MAX_BITS_PER_WORD]

Referenced by expand_mult_const(), and synth_mult().

short algorithm::ops

Referenced by expand_mult_const(), and synth_mult().

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The documentation for this struct was generated from the following file:

• expmed.h