ref: 49ff67154a0150cade077dcd040d68bc6a200b17
dir: /h/randh.h/
typedef struct { SPFLOAT freq; SPFLOAT min, max; SPFLOAT val; uint32_t counter, dur; } sp_randh; int sp_randh_create(sp_randh **p); int sp_randh_destroy(sp_randh **p); int sp_randh_init(sp_data *sp, sp_randh *p); int sp_randh_compute(sp_data *sp, sp_randh *p, SPFLOAT *in, SPFLOAT *out);