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authorGabriel F. T. Gomes <gftg@linux.vnet.ibm.com>2016-12-13 22:42:51 -0200
committerGabriel F. T. Gomes <gftg@linux.vnet.ibm.com>2017-01-04 16:25:04 -0200
commitf67d78192c1be9d56d3a6f3fda4e0a70ae48c44d (patch)
treee08b1ae84e100cb5a17819f1bb9416a6c203d19b /math/w_exp2l_compat.c
parent811de1a68863f7903341288a113b8c0ac7aa9c0e (diff)
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Move wrappers to libm-compat-calls-auto
This commit moves one step towards the deprecation of wrappers that
use _LIB_VERSION / matherr / __kernel_standard functionality, by
adding the suffix '_compat' to their filenames and adjusting Makefiles
and #includes accordingly.

New template wrappers that do not use such functionality will be added
by future patches and will be first used by the float128 wrappers.
Diffstat (limited to 'math/w_exp2l_compat.c')
-rw-r--r--math/w_exp2l_compat.c19
1 files changed, 19 insertions, 0 deletions
diff --git a/math/w_exp2l_compat.c b/math/w_exp2l_compat.c
new file mode 100644
index 0000000000..47aed3cb83
--- /dev/null
+++ b/math/w_exp2l_compat.c
@@ -0,0 +1,19 @@
+/*
+ * wrapper exp2l(x)
+ */
+
+#include <math.h>
+#include <math_private.h>
+
+long double
+__exp2l (long double x)
+{
+  long double z = __ieee754_exp2l (x);
+  if (__builtin_expect (!isfinite (z) || z == 0, 0)
+      && isfinite (x) && _LIB_VERSION != _IEEE_)
+    /* exp2 overflow: 244, exp2 underflow: 245 */
+    return __kernel_standard_l (x, x, 244 + !!signbit (x));
+
+  return z;
+}
+weak_alias (__exp2l, exp2l)