diff options
Diffstat (limited to 'src/libs/sig/ops_inv.c')
-rw-r--r-- | src/libs/sig/ops_inv.c | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/src/libs/sig/ops_inv.c b/src/libs/sig/ops_inv.c new file mode 100644 index 0000000..abb1102 --- /dev/null +++ b/src/libs/sig/ops_inv.c @@ -0,0 +1,52 @@ +#include <assert.h> + +#include "sig.h" + + +typedef struct ops_inv_ctxt_t { + sig_t *x; +} ops_inv_ctxt_t; + + +static size_t ops_inv_size(va_list ap) +{ + return sizeof(ops_inv_ctxt_t); +} + + +static void ops_inv_init(void *context, va_list ap) +{ + ops_inv_ctxt_t *ctxt = context; + + assert(ctxt); + + ctxt->x = va_arg(ap, sig_t *); +} + + +static void ops_inv_destroy(void *context) +{ + ops_inv_ctxt_t *ctxt = context; + + assert(ctxt); + + sig_free(ctxt->x); +} + + +static float ops_inv_output(void *context, unsigned ticks_ms) +{ + ops_inv_ctxt_t *ctxt = context; + + assert(ctxt); + + return -sig_output(ctxt->x, ticks_ms); +} + + +sig_ops_t sig_ops_inv = { + .size = ops_inv_size, + .init = ops_inv_init, + .destroy = ops_inv_destroy, + .output = ops_inv_output, +}; |