# Glossary ## By theme * ANGLE & TRIGONOMETRY FUNCTIONS [radians()](index.html#radians.md) [degrees()](index.html#degrees.md) [sin()](index.html#sin.md) [cos()](index.html#cos.md) [tan()](index.html#tan.md) [asin()](index.html#asin.md) [acos()](index.html#acos.md) [atan()](index.html#atan.md) * EXPONENTIAL FUNCTIONS [pow()](index.html#pow.md) [exp()](index.html#exp.md) [log()](index.html#log.md) [exp2()](index.html#exp2.md) [log2()](index.html#log2.md) [sqrt()](index.html#sqrt.md) [inversesqrt()](index.html#inversesqrt.md) * COMMON FUNCTIONS [abs()](index.html#abs.md) [sign()](index.html#sign.md) [floor()](index.html#floor.md) [ceil()](index.html#ceil.md) [fract()](index.html#fract.md) [mod()](index.html#mod.md) [min()](index.html#min.md) [max()](index.html#max.md) [clamp()](index.html#clamp.md) [mix()](index.html#mix.md) [step()](index.html#step.md) [smoothstep()](index.html#smoothstep.md) * GEOMETRIC FUNCTIONS [length()](index.html#length.md) [distance()](index.html#distance.md) [dot()](index.html#dot.md) [cross()](index.html#cross.md) [normalize()](index.html#normalize.md) [facefoward()](index.html#facefoward.md) [reflect()](index.html#reflect.md) [refract()](index.html#refract.md) * MATRIX FUNCTIONS [matrixCompMult()](index.html#matrixCompMult.md) * VECTOR RELATIONAL FUNCTIONS [lessThan()](index.html#lessThan.md) [lessThanEqual()](index.html#lessThanEqual.md) [greaterThan()](index.html#greaterThan.md) [greaterThanEqual()](index.html#greaterThanEqual.md) [equal()](index.html#equal.md) [notEqual()](index.html#notEqual.md) [any()](index.html#any.md) [all()](index.html#all.md) [not()](index.html#not.md) * TEXTURE LOOKUP FUNCTIONS [texture2D()](index.html#texture2D.md) [textureCube()](index.html#textureCube.md) ## Alphabetical * A [abs()](index.html#abs.md) [acos()](index.html#acos.md) [all()](index.html#all.md) [any()](index.html#any.md) [asin()](index.html#asin.md) [atan()](index.html#atan.md) * C [ceil()](index.html#ceil.md) [clamp()](index.html#clamp.md) [cos()](index.html#cos.md) [cross()](index.html#cross.md) * D [degrees()](index.html#degrees.md) [distance()](index.html#distance.md) [dot()](index.html#dot.md) * E [equal()](index.html#equal.md) [exp()](index.html#exp.md) [exp2()](index.html#exp2.md) * F [faceforward()](index.html#faceforward.md) [floor()](index.html#floor.md) [fract()](index.html#fract.md) * G [greaterThan()](index.html#greaterThan.md) [greaterThanEqual()](index.html#greaterThanEqual.md) * I [inversesqrt()](index.html#inversesqrt.md) * L [length()](index.html#length.md) [lessThan()](index.html#lessThan.md) [lessThanEqual()](index.html#lessThanEqual.md) [log()](index.html#log.md) [log2()](index.html#log2.md) * M [matrixCompMult()](index.html#matrixCompMult.md) [max()](index.html#max.md) [min()](index.html#min.md) [mix()](index.html#mix.md) [mod()](index.html#mod.md) * N [normalize()](index.html#normalize.md) [not()](index.html#not.md) [notEqual()](index.html#notEqual.md) * P [pow()](index.html#pow.md) * R [radians()](index.html#radians.md) [reflect()](index.html#reflect.md) [refract()](index.html#refract.md) * S [sign()](index.html#sign.md) [sin()](index.html#sin.md) [smoothstep()](index.html#smoothstep.md) [sqrt()](index.html#sqrt.md) [step()](index.html#step.md) * T [tan()](index.html#tan.md) [texture2D()](index.html#texture2D.md) [textureCube()](index.html#textureCube.md)