-_mesa_update_histogram(GLcontext *ctx, GLuint n, const GLfloat rgba[][4]);
-
-
-extern void _mesa_GetMinmax(GLenum target, GLboolean reset, GLenum format, GLenum types, GLvoid *values);
-
-extern void _mesa_GetHistogram(GLenum target, GLboolean reset, GLenum format, GLenum type, GLvoid *values);
-
-extern void _mesa_GetHistogramParameterfv(GLenum target, GLenum pname, GLfloat *params);
-
-extern void _mesa_GetHistogramParameteriv(GLenum target, GLenum pname, GLint *params);
-
-extern void _mesa_GetMinmaxParameterfv(GLenum target, GLenum pname, GLfloat *params);
-
-extern void _mesa_GetMinmaxParameteriv(GLenum target, GLenum pname, GLint *params);