gboolean _gtk_css_value_equal (const GtkCssValue *value1,
const GtkCssValue *value2);
gboolean _gtk_css_value_equal0 (const GtkCssValue *value1,
const GtkCssValue *value2);
GtkCssValue *_gtk_css_value_transition (GtkCssValue *start,
GtkCssValue *end,
gboolean _gtk_css_value_equal (const GtkCssValue *value1,
const GtkCssValue *value2);
gboolean _gtk_css_value_equal0 (const GtkCssValue *value1,
const GtkCssValue *value2);
GtkCssValue *_gtk_css_value_transition (GtkCssValue *start,
GtkCssValue *end,