ref: f2e11903bc2d80a73e21916e2929a18b6042c5f6
dir: /h/bltriangle.h/
typedef struct { void *ud; int argpos; SPFLOAT *args[2]; SPFLOAT *freq; SPFLOAT *amp; } sp_bltriangle; int sp_bltriangle_create(sp_bltriangle **p); int sp_bltriangle_destroy(sp_bltriangle **p); int sp_bltriangle_init(sp_data *sp, sp_bltriangle *p); int sp_bltriangle_compute(sp_data *sp, sp_bltriangle *p, SPFLOAT *in, SPFLOAT *out);