function_signatures: matrix operations, matrix arithmetic operators, negation
function_signatures: matrix operations, matrix arithmetic operators, negation

stan-dev/stan,stan-dev/math,stan-dev/math,stan-dev/stan,stan-dev/math,stan-dev/stan,stan-dev/math,stan-dev/math,stan-dev/math,stan-dev/stan,stan-dev/math,stan-dev/math,stan-dev/math,stan-dev/stan