diff options
Diffstat (limited to 'src/libs/sig/ops_abs.c')
-rw-r--r-- | src/libs/sig/ops_abs.c | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/src/libs/sig/ops_abs.c b/src/libs/sig/ops_abs.c new file mode 100644 index 0000000..4adc255 --- /dev/null +++ b/src/libs/sig/ops_abs.c @@ -0,0 +1,53 @@ +#include <assert.h> +#include <math.h> + +#include "sig.h" + + +typedef struct ops_abs_ctxt_t { + sig_t *x; +} ops_abs_ctxt_t; + + +static size_t ops_abs_size(va_list ap) +{ + return sizeof(ops_abs_ctxt_t); +} + + +static void ops_abs_init(void *context, va_list ap) +{ + ops_abs_ctxt_t *ctxt = context; + + assert(ctxt); + + ctxt->x = va_arg(ap, sig_t *); +} + + +static void ops_abs_destroy(void *context) +{ + ops_abs_ctxt_t *ctxt = context; + + assert(ctxt); + + sig_free(ctxt->x); +} + + +static float ops_abs_output(void *context, unsigned ticks_ms) +{ + ops_abs_ctxt_t *ctxt = context; + + assert(ctxt); + + return fabsf(sig_output(ctxt->x, ticks_ms)); +} + + +sig_ops_t sig_ops_abs = { + .size = ops_abs_size, + .init = ops_abs_init, + .destroy = ops_abs_destroy, + .output = ops_abs_output, +}; |