Make pow() conform to standard definition

2021-03-03 09:05:21 -08:00
parent 754974faaa
commit 8af91bcbe7
15 changed files with 253 additions and 85 deletions
--- a/tool/build/lib/fpu.c
+++ b/tool/build/lib/fpu.c
@@ -171,7 +171,8 @@ static long double fyl2xp1(long double x, long double y) {
 }

 static long double fscale(long double significand, long double exponent) {
-  return scalbl(trunc(significand), exponent);
+  if (isunordered(significand, exponent)) return NAN;
+  return ldexp(significand, exponent);
 }

 static long double x87remainder(long double x, long double y, uint32_t *sw,