Here is a list of all documented files with brief descriptions:

[detail level 12345]

include
math
matrix
float.hpp	Common floating point matrix functions
projection.hpp	Common projection matrix functions
transform.hpp	Common SIMD matrix transformation functions
simd
matrix
float.hpp	Common single instruction multiple data (SIMD) floating point vector functions
vector
float.hpp	Common single instruction multiple data (SIMD) 32-bit floating point vector functions
half.hpp	Common single instruction multiple data (SIMD) 16-bit floating point vector functions
int.hpp	Common single instruction multiple data (SIMD) 32-bit signed integer vector functions
uint.hpp	Common single instruction multiple data (SIMD) 32-bit unsigned integer vector functions
types.hpp	Common single instruction multiple data (SIMD) types
vector
float.hpp	Common floating point vector functions
int.hpp	Common signed integer vector functions
uint.hpp	Common unsigned integer vector functions
aabb.hpp	Axis Aligned Bounding Box functions
angles.hpp	Common radians/degrees conversion functions
brdf.hpp	Common Bidirectional Reflectance Distribution Function functions. (BRDF)
bvh.hpp	Common Bounding Volume Hierarchy functions. (BVH)
color-space.hpp	Common color space conversion functions
color.hpp	Common color conversion functions
common.hpp	Common mathematics functions
frustum.hpp	Camera frustum planes
ibl.hpp	Common Image Based Lighting functions. (IBL)
line.hpp	Common line functions
matrix.hpp	Common matrix functions
metric.hpp	Common metric measuring system functions
packed-vector.hpp	Common packed vector functions
pbr-colors.hpp	Common physically based rendering colors
plane.hpp	Common infinite plane functions
quaternion.hpp	Common floating point quaternion functions
random.hpp	Common random generation functions
ray.hpp	Common infinite ray functions
sh.hpp	Common spherical harmonics functions
sphere.hpp	Common sphere functions
tone-mapping.hpp	Common tone mapping functions
triangle.hpp	Common triangle (polygon) functions
types.hpp	Common integer variable types
vector.hpp	Common vector functions
version.hpp	Common version functions