Changeset 2442:2750ac386c39 in roaraudio

Timestamp:

08/19/09 23:02:16 (15 years ago)

Author:

phi

Branch:

default

Phase:

public

Message:

added roar_math_cvpoly()

Files:

• include/libroardsp/poly.h (modified) (2 diffs)
• libroardsp/poly.c (modified) (1 diff)

include/libroardsp/poly.h

@@ -1 @@
-//math.h:
+//poly.h:
+
+// was math.h
 
 /*
- *      Copyright (C) Philipp 'ph3-der-loewe' Schafft - 2008
+ *      Copyright (C) Philipp 'ph3-der-loewe' Schafft - 2008, 2009
  *
  *  This file is part of libroar a part of RoarAudio,
@@ -45 +47 @@
 int roar_math_mkpoly_5x5 (float * poly, float * data);
 
+float roar_math_cvpoly     (float * poly, float t, int len);
 float roar_math_cvpoly_4x4 (float * poly, float t);
 

libroardsp/poly.c

@@ -105 +105 @@
 
 
+float roar_math_cvpoly     (float * poly, float t, int len) {
+ float ret = 0;
+ float ct  = 1;
+ int i;
+
+ if ( poly == NULL )
+  return 0;
+
+ switch (len) {
+  case 4: return roar_math_cvpoly_4x4(poly, t);
+ }
+
+ for (i = 0; i < len; i++) {
+  ret += poly[i] * ct;
+  ct  *= t;
+ }
+
+ return ret;
+}
+
 float roar_math_cvpoly_4x4 (float * poly, float t) {
  float ret = poly[0];