NLWriter: print -0 as 0 #30

Discard usage of macro IEEE_8087 not set in MP

CMakeLists.txt

@@ -492,7 +492,7 @@ endif ()
 # Build NLWriter2 example
 if (BUILD_EXAMPLES)
   message(STATUS
-    "Building NLWriter2 example. Set -DBUILD_EXAMPLES=off to switch off.")
+    "Building NLWriter2 examples. Set -DBUILD_EXAMPLES=off to switch off.")
   set(NLW2_DIR nl-writer2)
   add_subdirectory(${NLW2_DIR})
   # Gather source files for docu

nl-writer2/CMakeLists.txt

@@ -102,13 +102,19 @@ if (BUILD_EXAMPLES_NLW2)         # Actually build the example
   target_include_directories(nl-writer-example-cpp PUBLIC
     ${NLW2_INCLUDE_PATH})
   target_link_libraries(nl-writer-example-cpp ${NLW2_LIB_NAME})
-  add_dependencies(nl-writer-example-cpp mp)
+  ## if actually building mp. Otherwise make sure nl-opcodes.h has been generated
+  if (TARGET mp)
+    add_dependencies(nl-writer-example-cpp mp)
+  endif()
 
   add_executable(nl-writer-example-c ${NLSOL_C_EX_FILES})
   target_include_directories(nl-writer-example-c PUBLIC
     ${NLW2_INCLUDE_PATH})
   target_link_libraries(nl-writer-example-c ${NLW2_C_API_LIB_NAME})
-  add_dependencies(nl-writer-example-c mp)
+  ## if actually building mp. Otherwise make sure nl-opcodes.h has been generated
+  if (TARGET mp)
+    add_dependencies(nl-writer-example-c mp)
+  endif()
 endif()
 
 

nl-writer2/src/nl-writer2.cc

@@ -327,15 +327,7 @@ g_fmt(char *b, double x, int prec)
   char *b0, sbuf[400], *se;
 
   b0 = b;
-#if defined(_WIN32) || defined(_WIN64)
-#ifdef IEEE_8087
-  if (!(((Long*)&x)[1] & 0x7fffffff | ((Long*)&x)[0])) {
-#else
-  if (!(((Long*)&x)[0] & 0x7fffffff | ((Long*)&x)[1])) {
-#endif /* IEEE_8087 */
-#else /* _WIN32 || _WIN64 */
-  if (! x) {
-#endif /*_WIN32 || _WIN64 */
+  if (! x) {        // Report -0 as '0'
     *b++ = '0';
     *b = 0;
     goto done;