BitUtil: Delta, ZigZag, NumBits, Floating Point,...

bitutil.c

@@ -22,6 +22,7 @@
     - email    : powturbo [_AT_] gmail [_DOT_] com
 **/
 //    "Integer Compression" utility - delta, for, zigzag / Floating point compression
+#include <math.h> //nan
 #include "conf.h"
 #define BITUTIL_IN
 #include "bitutil.h"
@@ -630,7 +631,6 @@ uint32_t bitfm32(uint32_t *in, unsigned n, uint32_t  *px, uint32_t *pmin) { uint
 uint64_t bitfm64(uint64_t *in, unsigned n, uint64_t  *px, uint64_t *pmin) { uint64_t mi,mx; BITFM(uint64_t, in, n); *pmin = mi; if(px) *px = 0; return mx - mi; }
 
 //----------- Lossy floating point conversion: pad the trailing mantissa bits with zero bits according to the relative error e (ex. 0.00001)  ----------
-#include <math.h> //nan
 
   #ifdef USE_FLOAT16
 // https://clang.llvm.org/docs/LanguageExtensions.html#half-precision-floating-point