ref: 70285956de156f146984f42c8ffa42401d42edd7
dir: /h/samphold.h/
typedef struct { SPFLOAT val; } sp_samphold; int sp_samphold_create(sp_samphold **p); int sp_samphold_destroy(sp_samphold **p); int sp_samphold_init(sp_data *sp, sp_samphold *p); int sp_samphold_compute(sp_data *sp, sp_samphold *p, SPFLOAT *trig, SPFLOAT *in, SPFLOAT *out);