1 files changed, 89 insertions, 0 deletions
diff --git a/kpdf/xpdf/splash/SplashMath.h b/kpdf/xpdf/splash/SplashMath.h
new file mode 100644
index 00000000..12e0eec1
--- /dev/null
+++ b/kpdf/xpdf/splash/SplashMath.h
@@ -0,0 +1,89 @@
+//========================================================================
+//
+// SplashMath.h
+//
+//========================================================================
+
+#ifndef SPLASHMATH_H
+#define SPLASHMATH_H
+
+#include <aconf.h>
+#if USE_FIXEDPOINT
+#include "FixedPoint.h"
+#else
+#include <math.h>
+#endif
+#include "SplashTypes.h"
+
+static inline SplashCoord splashAbs(SplashCoord x) {
+#if USE_FIXEDPOINT
+  return FixedPoint::abs(x);
+#else
+  return fabs(x);
+#endif
+}
+
+static inline int splashFloor(SplashCoord x) {
+#if USE_FIXEDPOINT
+  return FixedPoint::floor(x);
+#else
+  return (int)floor(x);
+#endif
+}
+
+static inline int splashCeil(SplashCoord x) {
+#if USE_FIXEDPOINT
+  return FixedPoint::ceil(x);
+#else
+  return (int)ceil(x);
+#endif
+}
+
+static inline int splashRound(SplashCoord x) {
+#if USE_FIXEDPOINT
+  return FixedPoint::round(x);
+#else
+  return (int)floor(x + 0.5);
+#endif
+}
+
+static inline SplashCoord splashSqrt(SplashCoord x) {
+#if USE_FIXEDPOINT
+  return FixedPoint::sqrt(x);
+#else
+  return sqrt(x);
+#endif
+}
+
+static inline SplashCoord splashPow(SplashCoord x, SplashCoord y) {
+#if USE_FIXEDPOINT
+  return FixedPoint::pow(x, y);
+#else
+  return pow(x, y);
+#endif
+}
+
+static inline SplashCoord splashDist(SplashCoord x0, SplashCoord y0,
+				     SplashCoord x1, SplashCoord y1) {
+  SplashCoord dx, dy;
+  dx = x1 - x0;
+  dy = y1 - y0;
+#if USE_FIXEDPOINT
+  // this handles the situation where dx*dx or dy*dy is too large to
+  // fit in the 16.16 fixed point format
+  SplashCoord dxa, dya;
+  dxa = splashAbs(dx);
+  dya = splashAbs(dy);
+  if (dxa == 0 && dya == 0) {
+    return 0;
+  } else if (dxa > dya) {
+    return dxa * FixedPoint::sqrt(dya / dxa + 1);
+  } else {
+    return dya * FixedPoint::sqrt(dxa / dya + 1);
+  }
+#else
+  return sqrt(dx * dx + dy * dy);
+#endif
+}
+
+#endif