X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=src%2Fmisc.h;h=26b9a52639b3cafb7088e3c9690f132cc65cb99d;hb=067d02c2b8c591efc368cf5127c497313d7a373f;hp=0f03b6df2df9dba6a9779efced19e12d3728b991;hpb=60d7d619ee7885ad065f178eb0cf1e5d432b1921;p=pspp

diff --git a/src/misc.h b/src/misc.h
index 0f03b6df2d..26b9a52639 100644
--- a/src/misc.h
+++ b/src/misc.h
@@ -108,4 +108,27 @@
 
 int intlog10 (unsigned);
 
+/* Returns the square of X. */
+static inline double
+pow2 (double x) 
+{
+  return x * x;
+}
+
+/* Returns the cube of X. */
+static inline double
+pow3 (double x) 
+{
+  return x * x * x;
+}
+
+/* Returns the fourth power of X. */
+static inline double
+pow4 (double x) 
+{
+  double y = x * x;
+  y *= y;
+  return y;
+}
+
 #endif /* math/misc.h */