/// @ref core
/// @file glm/detail/func_integer.hpp
///
/// @see <a href="http://www.opengl.org/registry/doc/GLSLangSpec.4.20.8.pdf">GLSL 4.20.8 specification, section 8.8 Integer Functions</a>
///
/// @defgroup core_func_integer Integer functions
/// @ingroup core
///
/// These all operate component-wise. The description is per component.
/// The notation [a, b] means the set of bits from bit-number a through bit-number
/// b, inclusive. The lowest-order bit is bit 0.
#pragma once
#include "setup.hpp"
#include "precision.hpp"
#include "func_common.hpp"
#include "func_vector_relational.hpp"
namespace glm
{
/// @addtogroup core_func_integer
/// @{
/// Adds 32-bit unsigned integer x and y, returning the sum
/// modulo pow(2, 32). The value carry is set to 0 if the sum was
/// less than pow(2, 32), or to 1 otherwise.
///
/// @tparam genUType Unsigned integer scalar or vector types.
///
/// @see <a href="http://www.opengl.org/sdk/docs/manglsl/xhtml/uaddCarry.xml">GLSL uaddCarry man page</a>
/// @see <a href="http://www.opengl.org/registry/doc/GLSLangSpec.4.20.8.pdf">GLSL 4.20.8 specification, section 8.8 Integer Functions</a>
template <precision P, template <typename, precision> class vecType>
GLM_FUNC_DECL vecType<uint, P> uaddCarry(
vecType<uint, P> const & x,
vecType<uint, P> const & y,
vecType<uint, P> & carry);
/// Subtracts the 32-bit unsigned integer y from x, returning
/// the difference if non-negative, or pow(2, 32) plus the difference
/// otherwise. The value borrow is set to 0 if x >= y, or to 1 otherwise.
///
/// @tparam genUType Unsigned integer scalar or vector types.
///
/// @see <a href="http://www.opengl.org/sdk/docs/manglsl/xhtml/usubBorrow.xml">GLSL usubBorrow man page</a>
/// @see <a href="http://www.opengl.org/registry/doc/GLSLangSpec.4.20.8.pdf">GLSL 4.20.8 specification, section 8.8 Integer Functions</a>
template <precision P, template <typename, precision> class vecType>
GLM_FUNC_DECL vecType<uint, P> usubBorrow(
vecType<uint, P> const & x,
vecType<uint, P> const & y,
vecType<uint, P> & borrow);
/// Multiplies 32-bit integers x and y, producing a 64-bit
/// result. The 32 least-significant bits are returned in lsb.
/// The 32 most-significant bits are returned in msb.
///
/// @tparam genUType Unsigned integer scalar or vector types.
///
/// @see <a href="http://www.opengl.org/sdk/docs/manglsl/xhtml/umulExtended.xml">GLSL umulExtended man page</a>
/// @see <a href="http://www.opengl.org/registry/doc/GLSLangSpec.4.20.8.pdf">GLSL 4.20.8 specification, section 8.8 Integer Functions</a>
template <precision P, template <typename, precision> class vecType>
GLM_FUNC_DECL void umulExtended(
vecType<uint, P> const & x,
vecType<uint, P> const & y,
vecType<uint, P> & msb,
vecType<uint, P> & lsb);
/// Multiplies 32-bit integers x and y, producing a 64-bit
/// result. The 32 least-significant bits are returned in lsb.
/// The 32 most-significant bits are returned in msb.
///
/// @tparam genIType Signed integer scalar or vector types.
///
/// @see <a href="http://www.opengl.org/sdk/docs/manglsl/xhtml/imulExtended.xml">GLSL imulExtended man page</a>
/// @see <a href="http://www.opengl.org/registry/doc/GLSLangSpec.4.20.8.pdf">GLSL 4.20.8 specification, section 8.8 Integer Functions</a>
template <precision P, template <typename, precision> class vecType>
GLM_FUNC_DECL void imulExtended(
vecType<int, P> const & x,
vecType<int, P> const & y,
vecType<int, P> & msb,
vecType<int, P> & lsb);
/// Extracts bits [offset, offset + bits - 1] from value,
/// returning them in the least significant bits of the result.
/// For unsigned data types, the most significant bits of the
/// result will be set to zero. For signed data types, the
/// most significant bits will be set to the value of bit offset + base - 1.
///
/// If bits is zero, the result will be zero. The result will be
/// undefined if offset or bits is negative, or if the sum of
/// offset and bits is greater than the number of bits used
/// to store the operand.
///
/// @tparam T Signed or unsigned integer scalar or vector types.
///
/// @see <a href="http://www.opengl.org/sdk/docs/manglsl/xhtml/bitfieldExtract.xml">GLSL bitfieldExtract man page</a>
/// @see <a href="http://www.opengl.org/registry/doc/GLSLangSpec.4.20.8.pdf">GLSL 4.20.8 specification, section 8.8 Integer Functions</a>
template <typename T, precision P, template <typename, precision> class vecType>
GLM_FUNC_DECL vecType<T, P> bitfieldExtract(
vecType<T, P> const & Value,
int Offset,
int Bits);
/// Returns the insertion the bits least-significant bits of insert into base.
///
/// The result will have bits [offset, offset + bits - 1] taken
/// from bits [0, bits - 1] of insert, and all other bits taken
/// directly from the corresponding bits of base. If bits is
/// zero, the result will simply be base. The result will be
/// undefined if offset or bits is negative, or if the sum of
/// offset and bits is greater than the number of bits used to
/// store the operand.
///
/// @tparam T Signed or unsigned integer scalar or vector types.
///
/// @see <a href="http://www.opengl.org/sdk/docs/manglsl/xhtml/bitfieldInsert.xml">GLSL bitfieldInsert man page</a>
/// @see <a href="http://www.opengl.org/registry/doc/GLSLangSpec.4.20.8.pdf">GLSL 4.20.8 specification, section 8.8 Integer Functions</a>
template <typename T, precision P, template <typename, precision> class vecType>
GLM_FUNC_DECL vecType<T, P> bitfieldInsert(
vecType<T, P> const & Base,
vecType<T, P> const & Insert,
int Offset,
int Bits);
/// Returns the reversal of the bits of value.
/// The bit numbered n of the result will be taken from bit (bits - 1) - n of value,
/// where bits is the total number of bits used to represent value.
///
/// @tparam T Signed or unsigned integer scalar or vector types.
///
/// @see <a href="http://www.opengl.org/sdk/docs/manglsl/xhtml/bitfieldReverse.xml">GLSL bitfieldReverse man page</a>
/// @see <a href="http://www.opengl.org/registry/doc/GLSLangSpec.4.20.8.pdf">GLSL 4.20.8 specification, section 8.8 Integer Functions</a>
template <typename T, precision P, template <typename, precision> class vecType>
GLM_FUNC_DECL vecType<T, P> bitfieldReverse(vecType<T, P> const & v);
/// Returns the number of bits set to 1 in the binary representation of value.
///
/// @tparam T Signed or unsigned integer scalar or vector types.
///
/// @see <a href="http://www.opengl.org/sdk/docs/manglsl/xhtml/bitCount.xml">GLSL bitCount man page</a>
/// @see <a href="http://www.opengl.org/registry/doc/GLSLangSpec.4.20.8.pdf">GLSL 4.20.8 specification, section 8.8 Integer Functions</a>
template <typename genType>
GLM_FUNC_DECL int bitCount(genType v);
/// Returns the number of bits set to 1 in the binary representation of value.
///
/// @tparam T Signed or unsigned integer scalar or vector types.
///
/// @see <a href="http://www.opengl.org/sdk/docs/manglsl/xhtml/bitCount.xml">GLSL bitCount man page</a>
/// @see <a href="http://www.opengl.org/registry/doc/GLSLangSpec.4.20.8.pdf">GLSL 4.20.8 specification, section 8.8 Integer Functions</a>
template <typename T, precision P, template <typename, precision> class vecType>
GLM_FUNC_DECL vecType<int, P> bitCount(vecType<T, P> const & v);
/// Returns the bit number of the least significant bit set to
/// 1 in the binary representation of value.
/// If value is zero, -1 will be returned.
///
/// @tparam T Signed or unsigned integer scalar types.
///
/// @see <a href="http://www.opengl.org/sdk/docs/manglsl/xhtml/findLSB.xml">GLSL findLSB man page</a>
/// @see <a href="http://www.opengl.org/registry/doc/GLSLangSpec.4.20.8.pdf">GLSL 4.20.8 specification, section 8.8 Integer Functions</a>
template <typename genIUType>
GLM_FUNC_DECL int findLSB(genIUType x);
/// Returns the bit number of the least significant bit set to
/// 1 in the binary representation of value.
/// If value is zero, -1 will be returned.
///
/// @tparam T Signed or unsigned integer scalar types.
///
/// @see <a href="http://www.opengl.org/sdk/docs/manglsl/xhtml/findLSB.xml">GLSL findLSB man page</a>
/// @see <a href="http://www.opengl.org/registry/doc/GLSLangSpec.4.20.8.pdf">GLSL 4.20.8 specification, section 8.8 Integer Functions</a>
template <typename T, precision P, template <typename, precision> class vecType>
GLM_FUNC_DECL vecType<int, P> findLSB(vecType<T, P> const & v);
/// Returns the bit number of the most significant bit in the binary representation of value.
/// For positive integers, the result will be the bit number of the most significant bit set to 1.
/// For negative integers, the result will be the bit number of the most significant
/// bit set to 0. For a value of zero or negative one, -1 will be returned.
///
/// @tparam T Signed or unsigned integer scalar types.
///
/// @see <a href="http://www.opengl.org/sdk/docs/manglsl/xhtml/findMSB.xml">GLSL findMSB man page</a>
/// @see <a href="http://www.opengl.org/registry/doc/GLSLangSpec.4.20.8.pdf">GLSL 4.20.8 specification, section 8.8 Integer Functions</a>
template <typename genIUType>
GLM_FUNC_DECL int findMSB(genIUType x);
/// Returns the bit number of the most significant bit in the binary representation of value.
/// For positive integers, the result will be the bit number of the most significant bit set to 1.
/// For negative integers, the result will be the bit number of the most significant
/// bit set to 0. For a value of zero or negative one, -1 will be returned.
///
/// @tparam T Signed or unsigned integer scalar types.
///
/// @see <a href="http://www.opengl.org/sdk/docs/manglsl/xhtml/findMSB.xml">GLSL findMSB man page</a>
/// @see <a href="http://www.opengl.org/registry/doc/GLSLangSpec.4.20.8.pdf">GLSL 4.20.8 specification, section 8.8 Integer Functions</a>
template <typename T, precision P, template <typename, precision> class vecType>
GLM_FUNC_DECL vecType<int, P> findMSB(vecType<T, P> const & v);
/// @}
}//namespace glm
#include "func_integer.inl"
