type :fps = { s, b, s }

function s $sum(:fps %p) {
@start
	%f1 =s load %p
	%p8 =l add 8, %p
	%f2 =s load %p8
	%s =s add %f1, %f2
	ret %s
}

# >>> driver
# typedef struct { float f1; char b; float f2; } fps;
# extern float sum(fps);
# int main() { fps x = { 1.23, -1, 2.34 }; return !(sum(x) == 1.23f+2.34f); }
# /* Note the f suffixes above are important
#  * otherwise C does double operations. */
# <<<