ref: f6d97317c22b5d2e703844728a3f41b6bc3a74a4
dir: /h/brown.h/
typedef struct { SPFLOAT brown; } sp_brown; int sp_brown_create(sp_brown **p); int sp_brown_destroy(sp_brown **p); int sp_brown_init(sp_data *sp, sp_brown *p); int sp_brown_compute(sp_data *sp, sp_brown *p, SPFLOAT *in, SPFLOAT *out);