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((function atan
(signature float
(parameters
(declare (in) float y_over_x))
((return (call asin ((expression float *
(var_ref y_over_x)
(expression float rsq
(expression float +
(expression float *
(var_ref y_over_x)
(var_ref y_over_x))
(constant float (1.0))))))))))
(signature vec2
(parameters
(declare (in) vec2 y_over_x))
((return (call asin ((expression vec2 *
(var_ref y_over_x)
(expression vec2 rsq
(expression vec2 +
(expression vec2 *
(var_ref y_over_x)
(var_ref y_over_x))
(constant float (1.0))))))))))
(signature vec3
(parameters
(declare (in) vec3 y_over_x))
((return (call asin ((expression vec3 *
(var_ref y_over_x)
(expression vec3 rsq
(expression vec3 +
(expression vec3 *
(var_ref y_over_x)
(var_ref y_over_x))
(constant float (1.0))))))))))
(signature vec4
(parameters
(declare (in) vec4 y_over_x))
((return (call asin ((expression vec4 *
(var_ref y_over_x)
(expression vec4 rsq
(expression vec4 +
(expression vec4 *
(var_ref y_over_x)
(var_ref y_over_x))
(constant float (1.0))))))))))
(signature float
(parameters
(declare (in ) float y)
(declare (in ) float x)
)
(
(declare () float r)
(if (expression bool >
(expression float abs (var_ref x))
(expression float * (constant float (1.0e-8)) (expression float abs (var_ref y)))) (
(assign (x) (var_ref r) (call atan ((expression float / (var_ref y) (var_ref x)))))
(if (expression bool < (var_ref x) (constant float (0.000000)) ) (
(if (expression bool >= (var_ref y) (constant float (0.000000)) )
((assign (x) (var_ref r) (expression float + (var_ref r) (constant float (3.141593)))))
((assign (x) (var_ref r) (expression float - (var_ref r) (constant float (3.141593))))))
)
(
))
)
(
(declare () float sgn)
(assign (x) (var_ref sgn) (expression float sign (var_ref y)))
(assign (x) (var_ref r) (expression float * (var_ref sgn) (constant float (1.5707965))))
))
(return (var_ref r) )
))
(signature vec2
(parameters
(declare (in) vec2 y)
(declare (in) vec2 x))
((declare () vec2 r)
(assign (x) (var_ref r)
(call atan ((swiz x (var_ref y))
(swiz x (var_ref x)))))
(assign (y) (var_ref r)
(call atan ((swiz y (var_ref y))
(swiz y (var_ref x)))))
(return (var_ref r))))
(signature vec3
(parameters
(declare (in) vec3 y)
(declare (in) vec3 x))
((declare () vec3 r)
(assign (x) (var_ref r)
(call atan ((swiz x (var_ref y))
(swiz x (var_ref x)))))
(assign (y) (var_ref r)
(call atan ((swiz y (var_ref y))
(swiz y (var_ref x)))))
(assign (z) (var_ref r)
(call atan ((swiz z (var_ref y))
(swiz z (var_ref x)))))
(return (var_ref r))))
(signature vec4
(parameters
(declare (in) vec4 y)
(declare (in) vec4 x))
((declare () vec4 r)
(assign (x) (var_ref r)
(call atan ((swiz x (var_ref y))
(swiz x (var_ref x)))))
(assign (y) (var_ref r)
(call atan ((swiz y (var_ref y))
(swiz y (var_ref x)))))
(assign (z) (var_ref r)
(call atan ((swiz z (var_ref y))
(swiz z (var_ref x)))))
(assign (w) (var_ref r)
(call atan ((swiz w (var_ref y))
(swiz w (var_ref x)))))
(return (var_ref r)))))
))
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