shithub: femtolisp

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use more stuff from math.h

--- a/flisp.c

+++ b/flisp.c

@@ -408,7 +408,8 @@

 			*pcdr = nc = tagptr((cons_t*)curheap, TAG_CONS);

 			curheap += sizeof(cons_t);

 			d = cdr_(v);

-			car_(v) = TAG_FWD; cdr_(v) = nc;

+			car_(v) = TAG_FWD;

+			cdr_(v) = nc;

 			car_(nc) = relocate(a);

 			pcdr = &cdr_(nc);

 			v = d;

--- a/llt/llt.h

+++ b/llt/llt.h

@@ -55,10 +55,8 @@

 #define LOG2_10 3.3219280948873626

 #define rel_zero(a, b) (fabs((a)/(b)) < DBL_EPSILON)

-#define sign_bit(r) ((*(uint64_t*)&(r)) & BIT63)

 #define LABS(n) (((n)^((n)>>(NBITS-1))) - ((n)>>(NBITS-1)))

 #define NBABS(n, nb) (((n)^((n)>>((nb)-1))) - ((n)>>((nb)-1)))

-#define DFINITE(d) (((*(uint64_t*)&(d))&0x7ff0000000000000ULL) != 0x7ff0000000000000ULL)

 #define LLT_ALIGN(x, sz) (((x) + (sz-1)) & (-sz))

 // a mask with n set lo or hi bits

--- a/plan9/platform.h

+++ b/plan9/platform.h

@@ -33,6 +33,8 @@

 #define asinf asin

 #define acosf acos

 #define atanf atan

+#define signbit(r) ((*(uint64_t*)&(r)) & BIT63)

+#define isfinite(d) (((*(uint64_t*)&(d))&0x7ff0000000000000ULL) != 0x7ff0000000000000ULL)

 #define LC_NUMERIC 0

 #define setlocale(x, y)

--- a/print.c

+++ b/print.c

@@ -570,10 +570,7 @@

 		keepz = 1;

 	}

 	if(isnan(r)){

-		if(sign_bit(r))

-			strncpy(s, "-nan", cnt);

-		else

-			strncpy(s, "nan", cnt);

+		strncpy(s, signbit(r) ? "-nan" : "nan", cnt);

 		return;

 	}

 	if(r == 0){

@@ -683,12 +680,12 @@

 			d = *(double*)data;

 			ndec = 16;

 		}

-		if(!DFINITE(d)){

+		if(!isfinite(d)){

 			char *rep;

 			if(isnan(d))

-				rep = sign_bit(d) ? "-nan.0" : "+nan.0";

+				rep = signbit(d) ? "-nan.0" : "+nan.0";

 			else

-				rep = sign_bit(d) ? "-inf.0" : "+inf.0";

+				rep = signbit(d) ? "-inf.0" : "+inf.0";

 			if(type == floatsym && !print_princ && !weak)

 				HPOS += ios_printf(f, "#%s(%s)", symbol_name(type), rep);

 			else