Accommodate MINGW32 gcc environment. It appears to:

  - supply strcasecmp
  - not supply HUGE
etc.  So make sure HUGE, M_PI, M_LN10 are defined,
along with a few more libm functions used in kira_parti.cc.

src/winjunk.c

@@ -65,6 +65,8 @@ unsigned int htonl(unsigned int v) {
 }
 
 #include <math.h>
+#include <float.h>
+
 double rint(double v) {
     return floor(v + 0.5);
 }

src/winjunk.h

+#ifndef WINJUNK_H
+#define WINJUNK_H
 #ifdef WIN32
 /*
  * Assorted functions needed for Windows port.
@@ -11,29 +13,50 @@
 #define  WINDOWS_LEAN_AND_MEAN	1	/* ugh */
 #include <windows.h>
 #include <malloc.h>
+#include <math.h>
+#include <float.h>
 
 #undef htonl
 #undef ntohl
 extern unsigned int htonl(unsigned int v);
 #define ntohl(x)  htonl(x)
 
-extern int strcasecmp(const char *s1, const char *s2);
-extern int strncasecmp(const char *s1, const char *s2, int maxlen);
+#ifndef __MINGW32__
+  extern int strcasecmp(const char *s1, const char *s2);
+  extern int strncasecmp(const char *s1, const char *s2, int maxlen);
+#endif
+
+#ifndef HUGE
+  #define  HUGE		FLT_MAX
+#endif
+#ifndef M_LN10
+  #define  M_LN10	2.30258509299404568402
+#endif
+#ifndef M_PI
+  #define  M_PI		3.14159265358979323846
+#endif
+
+#define finite(x)	_finite(x)
 
 extern void srandom(int seed);
 extern int random();
 
 extern double rint(double);
 
-#ifndef __cplusplus
 #define sqrtf(_) sqrt(_)
 #define sinf(_)  sin(_)
 #define cosf(_)  cos(_)
+#define tanf(_)  tan(_)
+#define expf(_)  exp(_)
+#define log10f(_) log10(_)
 #define atan2f(_,__) atan2(_,__)
 #define hypotf(_,__) hypot(_,__)
-#endif
 
 #include <io.h>		/* for access() */
-#define R_OK 004	/* No Windows include-file defines this?! */
+#ifndef R_OK
+# define R_OK 004	/* No Windows include-file defines this?! */
+#endif
+
 
 #endif /*WIN32*/
+#endif /*WINJUNK_H*/