OpenGL Mathematics (GLM) is a header only C++ mathematics library for graphics software based on the OpenGL Shading Language (GLSL) specifications.

GLM provides classes and functions designed and implemented with the same naming conventions and functionality than GLSL so that anyone who knows GLSL, can use GLM as well in C++.

This project isn't limited to GLSL features. An extension system, based on the GLSL extension conventions, provides extended capabilities: matrix transformations, quaternions, data packing, random numbers, noise, etc...

This library works perfectly with OpenGL but it also ensures interoperability with other third party libraries and SDK. It is a good candidate for software rendering (raytracing / rasterisation), image processing, physics simulations and any development context that requires a simple and convenient mathematics library.

GLM is written in C++98 but can take advantage of C++11 when supported by the compiler. It is a platform independent library with no dependence and it officially supports the following compilers:

• GCC 4.7 and higher
• Intel C++ Compose XE 2013 and higher
• Clang 3.4 and higher
• Apple Clang 6.0 and higher
• Visual C++ 2013 and higher
• CUDA 9.0 and higher (experimental)
• Any C++11 compiler

For more information about GLM, please have a look at the manual and the API reference documentation. The source code and the documentation are licensed under either the Happy Bunny License (Modified MIT) or the MIT License.

Thanks for contributing to the project by submitting pull requests.

#include <glm/vec3.hpp> // glm::vec3
#include <glm/vec4.hpp> // glm::vec4
#include <glm/mat4x4.hpp> // glm::mat4
#include <glm/ext/matrix_transform.hpp> // glm::translate, glm::rotate, glm::scale
#include <glm/ext/matrix_clip_space.hpp> // glm::perspective
#include <glm/ext/scalar_constants.hpp> // glm::pi

glm::mat4 camera(float Translate, glm::vec2 const& Rotate)
{
	glm::mat4 Projection = glm::perspective(glm::pi<float>() * 0.25f, 4.0f / 3.0f, 0.1f, 100.f);
	glm::mat4 View = glm::translate(glm::mat4(1.0f), glm::vec3(0.0f, 0.0f, -Translate));
	View = glm::rotate(View, Rotate.y, glm::vec3(-1.0f, 0.0f, 0.0f));
	View = glm::rotate(View, Rotate.x, glm::vec3(0.0f, 1.0f, 0.0f));
	glm::mat4 Model = glm::scale(glm::mat4(1.0f), glm::vec3(0.5f));
	return Projection * View * Model;
}

Service	Status
GitHub actions

• Added GLM_EXT_scalar_reciprocal with tests
• Added GLM_EXT_vector_reciprocal with tests
• Added glm::iround and glm::uround to GLM_EXT_scalar_common and GLM_EXT_vector_common
• Added GLM_EXT_matrix_integer with tests
• Added Github Actions

• Added constexpr qualifier for cross product #1040
• Added constexpr qualifier for dot product #1040

• Fixed incorrect assertion for glm::min and glm::max #1009
• Fixed quaternion orientation in glm::decompose #1012
• Fixed singularity in quaternion to euler angle roll conversion #1019
• Fixed quat glm::pow handling of small magnitude quaternions #1022
• Fixed glm::fastNormalize build error #1033
• Fixed glm::isMultiple build error #1034
• Fixed glm::adjugate calculation #1035
• Fixed glm::angle discards the sign of result for angles in range (2pi-1, 2pi) #1038
• Removed ban on using glm::string_cast with CUDA host code #1041

• Added GLM_EXT_vector_intX and GLM_EXT_vector_uintX extensions
• Added GLM_EXT_matrix_intX and GLM_EXT_matrix_uintX extensions

• Added glm::clamp, glm::repeat, glm::mirrorClamp and glm::mirrorRepeat function to GLM_EXT_scalar_commond and GLM_EXT_vector_commond extensions with tests

• Fixed unnecessary warnings from matrix_projection.inl #995
• Fixed quaternion glm::slerp overload which interpolates with extra spins #996
• Fixed for glm::length using arch64 #992
• Fixed singularity check for glm::quatLookAt #770

• Improved Neon support with more functions optimized #950
• Added CMake GLM interface #963
• Added glm::fma implementation based on std::fma #969
• Added missing quat constexpr #955
• Added GLM_FORCE_QUAT_DATA_WXYZ to store quat data as w,x,y,z instead of x,y,z,w #983

• Fixed equal ULP variation when using negative sign #965
• Fixed for intersection ray/plane and added related tests #953
• Fixed ARM 64bit detection #949
• Fixed GLM_EXT_matrix_clip_space warnings #980
• Fixed Wimplicit-int-float-conversion warnings with clang 10+ #986
• Fixed GLM_EXT_matrix_clip_space perspectiveFov

• Added Neon support #945
• Added SYCL support #914
• Added GLM_EXT_scalar_integer extension with power of two and multiple scalar functions
• Added GLM_EXT_vector_integer extension with power of two and multiple vector functions

• Added Visual C++ 2019 detection
• Added Visual C++ 2017 15.8 and 15.9 detection
• Added missing genType check for glm::bitCount and glm::bitfieldReverse #893

• Fixed for g++6 where -std=c++1z sets __cplusplus to 201500 instead of 201402 #921
• Fixed hash hashes qua instead of tquat #919
• Fixed .natvis as structs renamed #915
• Fixed glm::ldexp and glm::frexp declaration #895
• Fixed missing const to quaternion conversion operators #890
• Fixed GLM_EXT_scalar_ulp and GLM_EXT_vector_ulp API coding style
• Fixed quaternion componant order: w, {x, y, z} #916
• Fixed GLM_HAS_CXX11_STL broken on Clang with Linux #926
• Fixed Clang or GCC build due to wrong GLM_HAS_IF_CONSTEXPR definition #907
• Fixed CUDA 9 build #910

• Removed CMake install and uninstall scripts

• Fixed build errors when defining GLM_ENABLE_EXPERIMENTAL #884 #883
• Fixed if constexpr warning #887
• Fixed missing declarations for glm::frexp and glm::ldexp #886

• Added glm::mix implementation for matrices in *GLM_EXT_matrix_common/ #842
• Added CMake BUILD_SHARED_LIBS and BUILD_STATIC_LIBS build options #871

• Added GLM_FORCE_INTRINSICS to enable SIMD instruction code path. By default, it's disabled allowing constexpr support by default. #865
• Optimized inverseTransform #867

• Fixed in glm::mat4x3 conversion #829
• Fixed constexpr issue on GCC #832 #865
• Fixed glm::mix implementation to improve GLSL conformance #866
• Fixed glm::int8 being defined as unsigned char with some compiler #839
• Fixed glm::vec1 include #856
• Ignore .vscode #848

• Added glm::equal and glm::notEqual overload with max ULPs parameters for scalar numbers #121
• Added GLM_FORCE_SILENT_WARNINGS to silent GLM warnings when using language extensions but using W4 or Wpedantic warnings #814 #775
• Added adjugate functions to GLM_GTX_matrix_operation #151
• Added GLM_FORCE_ALIGNED_GENTYPES to enable aligned types and SIMD instruction are not enabled. This disable constexpr #816

• Added constant time ULP distance between float #121
• Added GLM_FORCE_SILENT_WARNINGS to suppress GLM warnings #822

• Fixed glm::simplex noise build with double #734
• Fixed glm::bitfieldInsert according to GLSL spec #818
• Fixed glm::refract for negative 'k' #808

• Fixed GLM_FORCE_CXX** section in the manual
• Fixed default initialization with vector and quaternion types using GLM_FORCE_CTOR_INIT #812

• Added bitfieldDeinterleave to GLM_GTC_bitfield
• Added missing glm::equal and glm::notEqual with epsilon for quaternion types to GLM_GTC_quaternion
• Added GLM_EXT_matrix_relational: glm::equal and glm::notEqual with epsilon for matrix types
• Added missing aligned matrix types to GLM_GTC_type_aligned
• Added C++17 detection
• Added Visual C++ language standard version detection
• Added PDF manual build from markdown

• Added a section to the manual for contributing to GLM
• Refactor manual, lists all configuration defines
• Added missing glm::vec1 based constructors
• Redesigned constexpr support which excludes both SIMD and constexpr #783
• Added detection of Visual C++ 2017 toolsets
• Added identity functions #765
• Splitted headers into EXT extensions to improve compilation time #670
• Added separated performance tests
• Clarified refract valid range of the indices of refraction, between -1 and 1 inclusively #806

• Fixed SIMD detection on Clang and GCC
• Fixed build problems due to std::printf and std::clock_t #778
• Fixed int mod
• Anonymous unions require C++ language extensions
• Fixed glm::ortho #790
• Fixed Visual C++ 2013 warnings in vector relational code #782
• Fixed ICC build errors with constexpr #704
• Fixed defaulted operator= and constructors #791
• Fixed invalid conversion from int scalar with vec4 constructor when using SSE instruction
• Fixed infinite loop in random functions when using negative radius values using an assert #739

• Added RGBM encoding in GLM_GTC_packing #420
• Added GLM_GTX_color_encoding extension
• Added GLM_GTX_vec_swizzle, faster compile time swizzling then swizzle operator #558
• Added GLM_GTX_exterior_product with a vec2 glm::cross implementation #621
• Added GLM_GTX_matrix_factorisation to factor matrices in various forms #654
• Added GLM_ENABLE_EXPERIMENTAL to enable experimental features.
• Added packing functions for integer vectors #639
• Added conan packaging configuration #643 #641
• Added glm::quatLookAt to GLM_GTX_quaternion #659
• Added glm::fmin, glm::fmax and glm::fclamp to GLM_GTX_extended_min_max #372
• Added GLM_EXT_vector_relational: extend glm::equal and glm::notEqual to take an epsilon argument
• Added GLM_EXT_vector_relational: glm::openBounded and glm::closeBounded
• Added GLM_EXT_vec1: *vec1 types
• Added GLM_GTX_texture: levels function
• Added spearate functions to use both nagative one and zero near clip plans #680
• Added GLM_FORCE_SINGLE_ONLY to use GLM on platforms that don't support double #627
• Added GLM_GTX_easing for interpolation functions #761

• No more default initialization of vector, matrix and quaternion types
• Added lowp variant of GTC_color_space convertLinearToSRGB #419
• Replaced the manual by a markdown version #458
• Improved API documentation #668
• Optimized GTC_packing implementation
• Optimized GTC_noise functions
• Optimized GTC_color_space HSV to RGB conversions
• Optimised GTX_color_space_YCoCg YCoCgR conversions
• Optimized GTX_matrix_interpolation axisAngle function
• Added FAQ 12: Windows headers cause build errors... #557
• Removed GCC shadow warnings #595
• Added error for including of different versions of GLM #619
• Added GLM_FORCE_IGNORE_VERSION to ignore error caused by including different version of GLM #619
• Reduced warnings when using very strict compilation flags #646
• length() member functions are constexpr #657
• Added support of -Weverything with Clang #646
• Improved exponential function test coverage
• Enabled warnings as error with Clang unit tests
• Conan package is an external repository: https://github.com/bincrafters/conan-glm
• Clarify quat_cast documentation, applying on pure rotation matrices #759

• Removed doxygen references to GLM_GTC_half_float which was removed in 0.9.4
• Fixed glm::decompose #448
• Fixed glm::intersectRayTriangle #6
• Fixed dual quaternion != operator #629
• Fixed usused variable warning in GLM_GTX_spline #618
• Fixed references to GLM_FORCE_RADIANS which was removed #642
• Fixed glm::fastInverseSqrt to use fast inverse square #640
• Fixed glm::axisAngle NaN #638
• Fixed integer pow from GLM_GTX_integer with null exponent #658
• Fixed quat normalize build error #656
• Fixed Visual C++ 2017.2 warning regarding __has_feature definision #655
• Fixed documentation warnings
• Fixed GLM_HAS_OPENMP when OpenMP is not enabled
• Fixed Better follow GLSL min and max specification #372
• Fixed quaternion constructor from two vectors special cases #469
• Fixed glm::to_string on quaternions wrong components order #681
• Fixed glm::acsch #698
• Fixed glm::isnan on CUDA #727

• Requires Visual Studio 2013, GCC 4.7, Clang 3.4, Cuda 7, ICC 2013 or a C++11 compiler
• Removed GLM_GTX_simd_vec4 extension
• Removed GLM_GTX_simd_mat4 extension
• Removed GLM_GTX_simd_quat extension
• Removed GLM_SWIZZLE, use GLM_FORCE_SWIZZLE instead
• Removed GLM_MESSAGES, use GLM_FORCE_MESSAGES instead
• Removed GLM_DEPTH_ZERO_TO_ONE, use GLM_FORCE_DEPTH_ZERO_TO_ONE instead
• Removed GLM_LEFT_HANDED, use GLM_FORCE_LEFT_HANDED instead
• Removed GLM_FORCE_NO_CTOR_INIT
• Removed glm::uninitialize

• Added Conan package support #647

• Fixed Clang version detection from source #608
• Fixed glm::packF3x9_E1x5 exponent packing #614
• Fixed build error min and max specializations with integer #616
• Fixed simd_mat4 build error #652

• Fixed GLM_GTC_packing test failing on GCC x86 due to denorms #212 #577
• Fixed POPCNT optimization build in Clang #512
• Fixed glm::intersectRayPlane returns true in parallel case #578
• Fixed GCC 6.2 compiler warnings #580
• Fixed GLM_GTX_matrix_decompose glm::decompose #582 #448
• Fixed GCC 4.5 and older build #566
• Fixed Visual C++ internal error when declaring a global vec type with siwzzle expression enabled #594
• Fixed GLM_FORCE_CXX11 with Clang and libstlc++ which wasn't using C++11 STL features. #604

• Broader support of GLM_FORCE_UNRESTRICTED_GENTYPE #378

• Fixed Android build error with C++11 compiler but C++98 STL #284 #564
• Fixed GLM_GTX_transform2 shear* functions #403
• Fixed interaction between GLM_FORCE_UNRESTRICTED_GENTYPE and glm::ortho function #568
• Fixed glm::bitCount with AVX on 32 bit builds #567
• Fixed CMake find_package with version specification #572 #573

• Added Visual C++ 15 detection
• Added Clang 4.0 detection
• Added warning messages when using GLM_FORCE_CXX** but the compiler is known to not fully support the requested C++ version #555
• Refactored GLM_COMPILER_VC values
• Made quat, vec, mat type component length() static #565

• Fixed Visual C++ constexpr build error #555, #556

• Optimized quaternion glm::log function #554

• Fixed GCC warning filtering, replaced -pedantic by -Wpedantic
• Fixed SIMD faceforward bug. #549
• Fixed GCC 4.8 with C++11 compilation option #550
• Fixed Visual Studio aligned type W4 warning #548
• Fixed packing/unpacking function fixed for 5_6_5 and 5_5_5_1 #552

• Added right and left handed projection and clip control support #447 #415 #119
• Added glm::compNormalize and glm::compScale functions to GLM_GTX_component_wise
• Added glm::packF3x9_E1x5 and glm::unpackF3x9_E1x5 to GLM_GTC_packing for RGB9E5 #416
• Added (un)packHalf to GLM_GTC_packing
• Added (un)packUnorm and (un)packSnorm to GLM_GTC_packing
• Added 16bit pack and unpack to GLM_GTC_packing
• Added 8bit pack and unpack to GLM_GTC_packing
• Added missing bvec* && and || operators
• Added glm::iround and glm::uround to GLM_GTC_integer, fast round on positive values
• Added raw SIMD API
• Added 'aligned' qualifiers
• Added GLM_GTC_type_aligned with aligned vec types
• Added GLM_GTC_functions extension
• Added quaternion version of glm::isnan and glm::isinf #521
• Added glm::lowestBitValue to GLM_GTX_bit #536
• Added GLM_FORCE_UNRESTRICTED_GENTYPE allowing non basic genType #543

• Improved SIMD and swizzle operators interactions with GCC and Clang #474
• Improved GLM_GTC_random linearRand documentation
• Improved GLM_GTC_reciprocal documentation
• Improved GLM_FORCE_EXPLICIT_CTOR coverage #481
• Improved OpenMP support detection for Clang, GCC, ICC and VC
• Improved GLM_GTX_wrap for SIMD friendliness
• Added constexpr for *vec*, *mat*, *quat* and *dual_quat* types #493
• Added NEON instruction set detection
• Added MIPS CPUs detection
• Added PowerPC CPUs detection
• Use Cuda built-in function for abs function implementation with Cuda compiler
• Factorized GLM_COMPILER_LLVM and GLM_COMPILER_APPLE_CLANG into GLM_COMPILER_CLANG
• No more warnings for use of long long
• Added more information to build messages

• Fixed GLM_GTX_extended_min_max filename typo #386
• Fixed glm::intersectRayTriangle to not do any unintentional backface culling
• Fixed long long warnings when using C++98 on GCC and Clang #482
• Fixed sign with signed integer function on non-x86 architecture
• Fixed strict aliasing warnings #473
• Fixed missing glm::vec1 overload to glm::length2 and glm::distance2 functions #431
• Fixed GLM test '/fp:fast' and '/Za' command-line options are incompatible
• Fixed quaterion to mat3 cast function glm::mat3_cast from GLM_GTC_quaternion #542
• Fixed GLM_GTX_io for Cuda #547 #546

• Removed GLM_FORCE_SIZE_FUNC define
• Deprecated GLM_GTX_simd_vec4 extension
• Deprecated GLM_GTX_simd_mat4 extension
• Deprecated GLM_GTX_simd_quat extension
• Deprecated GLM_SWIZZLE, use GLM_FORCE_SWIZZLE instead
• Deprecated GLM_MESSAGES, use GLM_FORCE_MESSAGES instead

• Added pkg-config file #509
• Updated list of compiler versions detected
• Improved C++ 11 STL detection #523

• Fixed STL for C++11 detection on ICC #510
• Fixed missing vec1 overload to length2 and distance2 functions #431
• Fixed long long warnings when using C++98 on GCC and Clang #482
• Fixed scalar reciprocal functions (GTC_reciprocal) #520

• Added Visual C++ Clang toolset detection

• Fixed uaddCarry warning #497
• Fixed roundPowerOfTwo and floorPowerOfTwo #503
• Fixed Visual C++ SIMD instruction set automatic detection in 64 bits
• Fixed to_string when used with GLM_FORCE_INLINE #506
• Fixed GLM_FORCE_INLINE with binary vec4 operators
• Fixed GTX_extended_min_max filename typo #386
• Fixed intersectRayTriangle to not do any unintentional backface culling

• Fixed asinh and atanh warning with C++98 STL #484
• Fixed polar coordinates function latitude #485
• Fixed outerProduct defintions and operator signatures for mat2x4 and vec4 #475
• Fixed eulerAngles precision error, returns NaN #451
• Fixed undefined reference errors #489
• Fixed missing GLM_PLATFORM_CYGWIN declaration #495
• Fixed various undefined reference errors #490

• Added AVX512 detection

• Fixed CMake policy warning
• Fixed GCC 6.0 detection #477
• Fixed Clang build on Windows #479
• Fixed 64 bits constants warnings on GCC #463

• Fixed GTC_round floorMultiple/ceilMultiple #412
• Fixed GTC_packing unpackUnorm3x10_1x2 #414
• Fixed GTC_matrix_inverse affineInverse #192
• Fixed ICC on Linux build errors #449
• Fixed ldexp and frexp compilation errors
• Fixed "Declaration shadows a field" warning #468
• Fixed 'GLM_COMPILER_VC2005 is not defined' warning #468
• Fixed various 'X is not defined' warnings #468
• Fixed missing unary + operator #435
• Fixed Cygwin build errors when using C++11 #405

• Improved constexpr for constant functions coverage #198
• Added to_string for quat and dual_quat in GTX_string_cast #375
• Improved overall execution time of unit tests #396

• Fixed strict alignment warnings #235 #370
• Fixed link errors on compilers not supported default function #377
• Fixed compilation warnings in vec4
• Fixed non-identity quaternions for equal vectors #234
• Fixed excessive GTX_fast_trigonometry execution time #396
• Fixed Visual Studio 2015 'hides class member' warnings #394
• Fixed builtin bitscan never being used #392
• Removed unused func_noise.* files #398

• Added GTC_color_space: convertLinearToSRGB and convertSRGBToLinear functions
• Added 'fmod' overload to GTX_common with tests #308
• Left handed perspective and lookAt functions #314
• Added functions eulerAngleXYZ and extractEulerAngleXYZ #311
• Added <glm/gtx/hash.hpp> to perform std::hash on GLM types #320 #367
• Added <glm/gtx/wrap.hpp> for texcoord wrapping
• Added static components and precision members to all vector and quat types #350
• Added .gitignore #349
• Added support of defaulted functions to GLM types, to use them in unions #366

• Changed usage of __has_include to support Intel compiler #307
• Specialized integer implementation of YCoCg-R #310
• Don't show status message in 'FindGLM' if 'QUIET' option is set. #317
• Added master branch continuous integration service on Linux 64 #332
• Clarified manual regarding angle unit in GLM, added FAQ 11 #326
• Updated list of compiler versions

• Fixed default precision for quat and dual_quat type #312
• Fixed (u)int64 MSB/LSB handling on BE archs #306
• Fixed multi-line comment warning in g++. #315
• Fixed specifier removal by 'std::make_pair<>' #333
• Fixed perspective fovy argument documentation #327
• Removed -m64 causing build issues on Linux 32 #331
• Fixed isfinite with C++98 compilers #343
• Fixed Intel compiler build error on Linux #354
• Fixed use of libstdc++ with Clang #351
• Fixed quaternion pow #346
• Fixed decompose warnings #373
• Fixed matrix conversions #371

• Removed integer specification for 'mod' in GTC_integer #308
• Removed GTX_multiple, replaced by GTC_round

• Fixed Android doesn't have C++ 11 STL #284

• Added display of GLM version with other GLM_MESSAGES
• Added ARM instruction set detection

• Removed assert for perspective with zFar < zNear #298
• Added Visual Studio natvis support for vec1, quat and dualqual types
• Cleaned up C++11 feature detections
• Clarify GLM licensing

• Fixed faceforward build #289
• Fixed conflict with Xlib #define True 1 #293
• Fixed decompose function VS2010 templating issues #294
• Fixed mat4x3 = mat2x3 * mat4x2 operator #297
• Fixed warnings in F2x11_1x10 packing function in GTC_packing #295
• Fixed Visual Studio natvis support for vec4 #288
• Fixed GTC_packing packnormx build and added tests #292
• Disabled GTX_scalar_multiplication for GCC, failing to build tests #242
• Fixed Visual C++ 2015 constexpr errors: Disabled only partial support
• Fixed functions not inlined with Clang #302
• Fixed memory corruption (undefined behaviour) #303

• Added GLM_LANG_CXX14_FLAG and GLM_LANG_CXX1Z_FLAG language feature flags
• Added C++14 detection

• Clean up GLM_MESSAGES compilation log to report only detected capabilities

• Fixed scalar uaddCarry build error with Cuda #276
• Fixed C++11 explicit conversion operators detection #282
• Fixed missing explicit conversion when using integer log2 with *vec1 types
• Fixed 64 bits integer GTX_string_cast to_string on VC 32 bit compiler
• Fixed Android build issue, STL C++11 is not supported by the NDK #284
• Fixed unsupported _BitScanForward64 and _BitScanReverse64 in VC10
• Fixed Visual C++ 32 bit build #283
• Fixed GLM_FORCE_SIZE_FUNC pragma message
• Fixed C++98 only build
• Fixed conflict between GTX_compatibility and GTC_quaternion #286
• Fixed C++ language restriction using GLM_FORCE_CXX**

• Exposed template vector and matrix types in 'glm' namespace #239, #244
• Added GTX_scalar_multiplication for C++ 11 compiler only #242
• Added GTX_range for C++ 11 compiler only #240
• Added closestPointOnLine function for tvec2 to GTX_closest_point #238
• Added GTC_vec1 extension, *vec1 support to vec types
• Updated GTX_associated_min_max with vec1 support
• Added support of precision and integers to linearRand #230
• Added Integer types support to GTX_string_cast #249
• Added vec3 slerp #237
• Added GTX_common with isdenomal #223
• Added GLM_FORCE_SIZE_FUNC to replace .length() by .size() #245
• Added GLM_FORCE_NO_CTOR_INIT
• Added 'uninitialize' to explicitly not initialize a GLM type
• Added GTC_bitfield extension, promoted GTX_bit
• Added GTC_integer extension, promoted GTX_bit and GTX_integer
• Added GTC_round extension, promoted GTX_bit
• Added GLM_FORCE_EXPLICIT_CTOR to require explicit type conversions #269
• Added GTX_type_aligned for aligned vector, matrix and quaternion types

• Rely on C++11 to implement isinf and isnan
• Removed GLM_FORCE_CUDA, Cuda is implicitly detected
• Separated Apple Clang and LLVM compiler detection
• Used pragma once
• Undetected C++ compiler automatically compile with GLM_FORCE_CXX98 and GLM_FORCE_PURE
• Added not function (from GLSL specification) on VC12
• Optimized bitfieldReverse and bitCount functions
• Optimized findLSB and findMSB functions.
• Optimized matrix-vector multiple performance with Cuda #257, #258
• Reduced integer type redifinitions #233
• Rewrited of GTX_fast_trigonometry #264 #265
• Made types trivially copyable #263
• Removed in GLM tests
• Used std features within GLM without redeclaring
• Optimized cot function #272
• Optimized sign function #272
• Added explicit cast from quat to mat3 and mat4 #275

• Fixed std::nextafter not supported with C++11 on Android #217
• Fixed missing value_type for dual quaternion
• Fixed return type of dual quaternion length
• Fixed infinite loop in isfinite function with GCC #221
• Fixed Visual Studio 14 compiler warnings
• Fixed implicit conversion from another tvec2 type to another tvec2 #241
• Fixed lack of consistency of quat and dualquat constructors
• Fixed uaddCarray #253
• Fixed float comparison warnings #270

• Requires Visual Studio 2010, GCC 4.2, Apple Clang 4.0, LLVM 3.0, Cuda 4, ICC 2013 or a C++98 compiler
• Removed degrees for function parameters
• Removed GLM_FORCE_RADIANS, active by default
• Removed VC 2005 / 8 and 2008 / 9 support
• Removed GCC 3.4 to 4.3 support
• Removed LLVM GCC support
• Removed LLVM 2.6 to 3.1 support
• Removed CUDA 3.0 to 3.2 support

• Fixed non-utf8 character #196
• Added FindGLM install for CMake #189
• Fixed GTX_color_space - saturation #195
• Fixed glm::isinf and glm::isnan for with Android NDK 9d #191
• Fixed builtin GLM_ARCH_SSE4 #204
• Optimized Quaternion vector rotation #205
• Fixed missing doxygen @endcond tag #211
• Fixed instruction set detection with Clang #158
• Fixed orientate3 function #207
• Fixed lerp when cosTheta is close to 1 in quaternion slerp #210
• Added GTX_io for io with #144
• Fixed fastDistance ambiguity #215
• Fixed tweakedInfinitePerspective #208 and added user-defined epsilon to tweakedInfinitePerspective
• Fixed std::copy and std::vector with GLM types #214
• Fixed strict aliasing issues #212, #152
• Fixed std::nextafter not supported with C++11 on Android #213
• Fixed corner cases in exp and log functions for quaternions #199

• Added instruction set auto detection with Visual C++ using _M_IX86_FP - /arch compiler argument
• Fixed GTX_raw_data code dependency
• Fixed GCC instruction set detection
• Added GLM_GTX_matrix_transform_2d extension (#178, #176)
• Fixed CUDA issues (#169, #168, #183, #182)
• Added support for all extensions but GTX_string_cast to CUDA
• Fixed strict aliasing warnings in GCC 4.8.1 / Android NDK 9c (#152)
• Fixed missing bitfieldInterleave definisions
• Fixed usubBorrow (#171)
• Fixed eulerAngle*** not consistent for right-handed coordinate system (#173)
• Added full tests for eulerAngle*** functions (#173)
• Added workaround for a CUDA compiler bug (#186, #185)

• Fixed initializer list ambiguity (#159, #160)
• Fixed warnings with the Android NDK 9c
• Fixed non power of two matrix products
• Fixed mix function link error
• Fixed SSE code included in GLM tests on "pure" platforms
• Fixed undefined reference to fastInverseSqrt (#161)
• Fixed GLM_FORCE_RADIANS with <glm/ext.hpp> build error (#165)
• Fix dot product clamp range for vector angle functions. (#163)
• Tentative fix for strict aliasing warning in GCC 4.8.1 / Android NDK 9c (#152)
• Fixed GLM_GTC_constants description brief (#162)

• Fixed angle and orientedAngle that sometimes return NaN values (#145)
• Deprecated degrees for function parameters and display a message
• Added possible static_cast conversion of GLM types (#72)
• Fixed error 'inverse' is not a member of 'glm' from glm::unProject (#146)
• Fixed mismatch between some declarations and definitions
• Fixed inverse link error when using namespace glm; (#147)
• Optimized matrix inverse and division code (#149)
• Added intersectRayPlane function (#153)
• Fixed outerProduct return type (#155)

• Added forward declarations (glm/fwd.hpp) for faster compilations
• Added per feature headers
• Minimized GLM internal dependencies
• Improved Intel Compiler detection
• Added bitfieldInterleave and _mm_bit_interleave_si128 functions
• Added GTX_scalar_relational
• Added GTX_dual_quaternion
• Added rotation function to GTX_quaternion (#22)
• Added precision variation of each type
• Added quaternion comparison functions
• Fixed GTX_multiple for negative value
• Removed GTX_ocl_type extension
• Fixed post increment and decrement operators
• Fixed perspective with zNear == 0 (#71)
• Removed l-value swizzle operators
• Cleaned up compiler detection code for unsupported compilers
• Replaced C cast by C++ casts
• Fixed .length() that should return a int and not a size_t
• Added GLM_FORCE_SIZE_T_LENGTH and glm::length_t
• Removed unnecessary conversions
• Optimized packing and unpacking functions
• Removed the normalization of the up argument of lookAt function (#114)
• Added low precision specializations of inversesqrt
• Fixed ldexp and frexp implementations
• Increased assert coverage
• Increased static_assert coverage
• Replaced GLM traits by STL traits when possible
• Allowed including individual core feature
• Increased unit tests completeness
• Added creating of a quaternion from two vectors
• Added C++11 initializer lists
• Fixed umulExtended and imulExtended implementations for vector types (#76)
• Fixed CUDA coverage for GTC extensions
• Added GTX_io extension
• Improved GLM messages enabled when defining GLM_MESSAGES
• Hidden matrix_inverse function implementation detail into private section

• Fixed detection to select the last known compiler if newer version #106
• Fixed is_int and is_uint code duplication with GCC and C++11 #107
• Fixed test suite build while using Clang in C++11 mode
• Added c++1y mode support in CMake test suite
• Removed ms extension mode to CMake when no using Visual C++
• Added pedantic mode to CMake test suite for Clang and GCC
• Added use of GCC frontend on Unix for ICC and Visual C++ fronted on Windows for ICC
• Added compilation errors for unsupported compiler versions
• Fixed glm::orientation with GLM_FORCE_RADIANS defined #112
• Fixed const ref issue on assignment operator taking a scalar parameter #116
• Fixed glm::eulerAngleY implementation #117

• Fixed CUDA support
• Fixed inclusion of intrinsics in "pure" mode #92
• Fixed language detection on GCC when the C++0x mode isn't enabled #95
• Fixed issue #97: register is deprecated in C++11
• Fixed issue #96: CUDA issues
• Added Windows CE detection #92
• Added missing value_ptr for quaternions #99

• Fixed slerp when costheta is close to 1 #65
• Fixed mat4x2 value_type constructor #70
• Fixed glm.natvis for Visual C++ 12 #82
• Added assert in inversesqrt to detect division by zero #61
• Fixed missing swizzle operators #86
• Fixed CUDA warnings #86
• Fixed GLM natvis for VC11 #82
• Fixed GLM_GTX_multiple with negative values #79
• Fixed glm::perspective when zNear is zero #71

• Detected qualifier for Clang
• Fixed C++11 mode for GCC, couldn't be enabled without MS extensions
• Fixed squad, intermediate and exp quaternion functions
• Fixed GTX_polar_coordinates euclidean function, takes a vec2 instead of a vec3
• Clarify the license applying on the manual
• Added a docx copy of the manual
• Fixed GLM_GTX_matrix_interpolation
• Fixed isnan and isinf on Android with Clang
• Autodetected C++ version using __cplusplus value
• Fixed mix for bool and bvec* third parameter

• Fixed compAdd from GTX_component_wise
• Fixed SIMD support for Intel compiler on Windows
• Fixed isnan and isinf for CUDA compiler
• Fixed GLM_FORCE_RADIANS on glm::perspective
• Fixed GCC warnings
• Fixed packDouble2x32 on Xcode
• Fixed mix for vec4 SSE implementation
• Fixed 0x2013 dash character in comments that cause issue in Windows Japanese mode
• Fixed documentation warnings
• Fixed CUDA warnings

• Improved half support: -0.0 case and implicit conversions
• Fixed Intel Composer Compiler support on Linux
• Fixed interaction between quaternion and euler angles
• Fixed GTC_constants build
• Fixed GTX_multiple
• Fixed quat slerp using mix function when cosTheta close to 1
• Improved fvec4SIMD and fmat4x4SIMD implementations
• Fixed assert messages
• Added slerp and lerp quaternion functions and tests

• Added Intel Composer Compiler support
• Promoted GTC_espilon extension
• Promoted GTC_ulp extension
• Removed GLM website from the source repository
• Added GLM_FORCE_RADIANS so that all functions takes radians for arguments
• Fixed detection of Clang and LLVM GCC on MacOS X
• Added debugger visualizers for Visual C++ 2012
• Requires Visual Studio 2005, GCC 4.2, Clang 2.6, Cuda 3, ICC 2013 or a C++98 compiler

• Added SSE4 and AVX2 detection.
• Removed VIRTREV_xstream and the incompatibility generated with GCC
• Fixed C++11 compiler option for GCC
• Removed MS language extension option for GCC (not fonctionnal)
• Fixed bitfieldExtract for vector types
• Fixed warnings
• Fixed SSE includes

• Fixed isinf and isnan
• Improved compatibility with Intel compiler
• Added CMake test build options: SIMD, C++11, fast math and MS land ext
• Fixed SIMD mat4 test on GCC
• Fixed perspectiveFov implementation
• Fixed matrixCompMult for none-square matrices
• Fixed namespace issue on stream operators
• Fixed various warnings
• Added VC11 support

• Fixed doxygen documentation
• Fixed Clang version detection
• Fixed simd mat4 /= operator

• Fixed platform detection
• Fixed warnings
• Removed detail code from Doxygen doc

• Added CPP Check project
• Fixed conflict with Windows headers
• Fixed isinf implementation
• Fixed Boost conflict
• Fixed warnings

• Added support for Chrone Native Client
• Added epsilon constant
• Removed value_size function from vector types
• Fixed roundEven on GCC
• Improved API documentation
• Fixed modf implementation
• Fixed step function accuracy
• Fixed outerProduct

• Improved doxygen documentation
• Added new swizzle operators for C++11 compilers
• Added new swizzle operators declared as functions
• Added GLSL 4.20 length for vector and matrix types
• Promoted GLM_GTC_noise extension: simplex, perlin, periodic noise functions
• Promoted GLM_GTC_random extension: linear, gaussian and various random number generation distribution
• Added GLM_GTX_constants: provides useful constants
• Added extension versioning
• Removed many unused namespaces
• Fixed half based type contructors
• Added GLSL core noise functions

• Added more swizzling constructors
• Added missing non-squared matrix products

• Fixed half based type build on old GCC
• Fixed /W4 warnings on Visual C++
• Fixed some missing l-value swizzle operators

• Fixed floatBitToXint functions
• Fixed pack and unpack functions
• Fixed round functions

• Fixed extensions bugs

• Fixed build issues

• Expend matrix constructors flexibility
• Improved quaternion implementation
• Fixed many warnings across platforms and compilers

• Automatically detect CUDA support
• Improved compiler detection
• Fixed errors and warnings in VC with C++ extensions disabled
• Fixed and tested GLM_GTX_vector_angle
• Fixed and tested GLM_GTX_rotate_vector

• Added CUDA support
• Added CTest test suite
• Added GLM_GTX_ulp extension
• Added GLM_GTX_noise extension
• Added GLM_GTX_matrix_interpolation extension
• Updated quaternion slerp interpolation

• Fixed bugs

• Fixed bugs

• Fixed bugs

• Fixed bugs

• Updated API documentation
• Improved SIMD implementation
• Fixed Linux build

• Added quaternion product operator.
• Clarify that GLM is a header only library.

• Added SIMD support
• Added new swizzle functions
• Improved static assert error message with C++0x static_assert
• New setup system
• Reduced branching
• Fixed trunc implementation

• Added GLSL 4.10 packing functions
• Added == and != operators for every types.

• Many matrices bugs fixed

• Improved Clang support
• Fixed bugs

• Added autoexp for GLM
• Fixed bugs

• Fixed non-squared matrix operators

• Added GLM_GTX_int_10_10_10_2
• Fixed bugs

• Fixed extensions errors

• Objective-C support
• Fixed warnings
• Updated documentation

• Git transition
• Removed experimental code from releases
• Fixed bugs

• Based on GLSL 4.00 specification
• Added the new core functions
• Added some implicit conversion support

• Improved some possible errors messages
• Improved declarations and definitions match

• Removed deprecated features
• Internal redesign

• Fixed warnings

• Fixed Half float arithmetic
• Fixed setup defines

• Fixed Half float adds

• Updated documentation
• Fixed MacOS X build

• Added GCC 4.4 and VC2010 support
• Added matrix optimizations

• Fixed bugs

• Updated GLM according GLSL 1.5 spec
• Fixed bugs

• Fixed bugs

• Added GLM_GTC_quaternion
• Added GLM_GTC_type_precision

• Fixed old extension system.

• Added stable extensions.
• Added new extension system.

• Fixed bugs.

• Fixed bugs.

• Fixed bugs.

• Fixed bugs.

• Fixed bugs.

• New method to use extension.

• Added CMake support for GLM tests.

• Improved half scalars and vectors support.

• Improved GLSL conformance
• Added GLSL 1.30 support
• Improved API documentation

• Improved C++ standard comformance
• Added Static assert for types checking

• Added build message system with Visual Studio
• Pedantic build with GCC

• Added external dependencies system.

• Fixed bugs
• Added new extension group

• Updated documentation
• Added preprocessor options

• Disabled half on GCC
• Fixed extensions

• Changed to MIT license
• Added new documentation

• Fixed swizzle operators

• Fixed type data accesses
• Fixed 3DSMax sdk conflict

• Fixed extension

• Fixed a namespace error
• Added extensions

• Added new extension namespace mecanium
• Added Automatic compiler detection

• Fixed swizzle operators

• Upgrated to GLSL 1.2
• Added swizzle operators
• Added setup settings

• Added OpenGL examples

• Added missing operators to vec* and mat*
• Added first GLSL 1.2 features
• Fixed windows.h before glm.h when windows.h required

• Fixed texcoord components access.
• Fixed mat4 and imat4 division operators.

• Added GCC 4.0 support under MacOS X.
• Added GCC 4.0 and 4.1 support under Linux.
• Added code optimisations.

• Improved GLSL type conversion and construction compliance.
• Added experimental extensions.
• Added Doxygen Documentation.
• Added code optimisations.
• Fixed bugs.

• Improve adaptative from GLSL.
• Add experimental extensions based on OpenGL extension process.
• Fixed bugs.

• Add vec2, vec3, vec4 GLSL types
• Add ivec2, ivec3, ivec4 GLSL types
• Add bvec2, bvec3, bvec4 GLSL types
• Add mat2, mat3, mat4 GLSL types
• Add almost all functions