math.h: intpow

src/include/Makefile

@@ -1,6 +1,6 @@
 objects := $(patsubst %.c,%.o,$(wildcard *.c))
-subdirs := stdio string hashtable ringbuffer
+subdirs := stdio string hashtable ringbuffer math
-OBJPATH=$(OBJDIR)/include/ringbuffer/
+OBJPATH=$(OBJDIR)/include/
 export
 
 all: $(subdirs) $(objects)

src/include/math.h

@@ -0,0 +1,6 @@
+#ifndef _MATH_H_INCLUDE
+#define _MATH_H_INCLUDE
+
+long intpow(long base, long exp);
+
+#endif

src/include/math/Makefile

@@ -0,0 +1,12 @@
+objects := $(patsubst %.c,%.o,$(wildcard *.c))
+subdirs :=
+OBJPATH=$(OBJDIR)/include/math/
+export
+
+all: $(subdirs) $(objects)
+	for subdir in $(subdirs) ; do $(MAKE) -C $${subdir} ; done
+
+%.o: %.c
+	$(CC) $(CFLAGS) -o $@ $<
+	mkdir -p $(OBJPATH) 
+	cp $@ $(OBJPATH)/$@

src/include/math/pow.c

@@ -0,0 +1,20 @@
+#include <math.h>
+
+long intpow(long base, long exp){
+	if(exp == 0)
+		return 1;
+
+	long mult = base;
+
+	// this is kinda inefficient but works for now I guess
+
+	// i = 1 because value only really changes when the exponent is 2
+
+	for(int i = 1; i < exp; ++i){
+		base *= mult;
+	}
+
+	return base;
+
+
+}