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Revise zygosity functions

master
C. J. Howard 4 years ago
parent
commit
747b857273
1 changed files with 22 additions and 32 deletions
  1. +22
    -32
      src/game/genetics/zygosity.hpp

+ 22
- 32
src/game/genetics/zygosity.hpp View File

@ -20,47 +20,37 @@
#ifndef ANTKEEPER_ZYGOSITY_HPP #ifndef ANTKEEPER_ZYGOSITY_HPP
#define ANTKEEPER_ZYGOSITY_HPP #define ANTKEEPER_ZYGOSITY_HPP
#include "gene.hpp"
namespace dna namespace dna
{ {
/// A homozygous recessive gene.
static constexpr gene homozygous_recessive = 0b00;
/// A homozygous dominant gene.
static constexpr gene homozygous_dominant = 0b11;
/// Returns `true` if gene @p x is heterozygous, `false` otherwise.
bool is_heterozygous(gene x);
/// Returns `true` if gene @p x is homozygous, `false` otherwise.
bool is_homozygous(gene x);
/// Returns `true` if gene @p x is homozygous recessive, `false` otherwise.
bool is_homozygous_recessive(gene x);
/// Returns `true` if gene @p x is homozygous dominant, `false` otherwise.
bool is_homozygous_dominant(gene x);
inline bool is_heterozygous(gene x)
{
return x - 1 < 2;
}
/**
* Tests a gene for heterozygosity.
*
* @param x Gene with alleles encoded in the two least significant bits.
* @return `true` if the gene is heterozygous, `false` otherwise.
*/
template <class T>
bool is_heterozygous(T x);
inline bool is_homozygous(gene x)
{
return (x & 1) == (x >> 1);
}
/**
* Tests a gene for homozygosity.
*
* @param x Gene with alleles encoded in the two least significant bits.
* @return `true` if the gene is homozygous, `false` otherwise.
*/
template <class T>
bool is_homozygous(T x);
inline bool is_homozygous_recessive(gene x)
template <class T>
inline bool is_heterozygous<T>(T x)
{ {
return x == homozygous_recessive;
return x & 1 != (x >> 1) & 1;
} }
inline bool is_homozygous_dominant(gene x)
template <class T>
inline bool is_homozygous<T>(T x)
{ {
return x == homozygous_dominant;
return x & 1 == (x >> 1) & 1;
} }
} // namespace dna } // namespace dna

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