char const *LILYPOND_DATADIR = PACKAGE_DATADIR "/" TOPLEVEL_VERSION;
+
+/* x86 defaults to using 80-bit extended precision arithmetic. This can cause
+ problems because the truncation from 80 bits to 64 bits can occur in
+ unpredictable places. To get around this, we tell the x87 FPU to use only
+ double precision. Note that this is not needed for x86_64 because that uses
+ the SSE unit by default instead of the x87 FPU. */
+#if ((defined(__x86__) || defined(__i386__)) \
+ && defined(HAVE_FPU_CONTROL_H) && (HAVE_FPU_CONTROL_H == 1))
+
+#include <fpu_control.h>
+static void configure_fpu() {
+ fpu_control_t fpu_control = 0x027f;
+ _FPU_SETCW (fpu_control);
+}
+
+#else
+
+static void configure_fpu() {
+}
+
+#endif /* defined(__x86__) || defined(__i386__) */
+
+
static void
env_var_info (FILE *out, char const *key)
{
int
main (int argc, char **argv, char **envp)
{
+ configure_fpu();
+
for (char **p = envp; *p; p++)
start_environment_global.push_back(*p);