[libc-commits] [PATCH] D143098: [libc][math] Fix setting exceptional value for tanf to work with gcc.

[Siva Chandra via Phabricator via libc-commits]

sivachandra added inline comments.


================
Comment at: libc/src/math/generic/tanf.cpp:100
 
-    return fputil::multiply_add(sign, 0x1.ddf9f4p0f, sign * 0x1.1p-24f);
+    volatile float tmp = 0x1.ddf9f4p0f;
+    tmp = fputil::multiply_add(sign, tmp, sign * 0x1.1p-24f);
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Can you add some commentary to explain why a volatile is required?


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D143098/new/

https://reviews.llvm.org/D143098