Changeset 84929b0 in mainline for uspace/lib/math/generic/__signbit.c

Timestamp:

2018-08-29T20:06:00Z (6 years ago)

Author:

Jiří Zárevúcky <jiri.zarevucky@…>

Children:

ed9043f7

Parents:

184ff675

git-author:

Jiří Zárevúcky <jiri.zarevucky@…> (2018-08-29 19:44:33)

git-committer:

Jiří Zárevúcky <jiri.zarevucky@…> (2018-08-29 20:06:00)

Message:

Strip libmath to the bare necessities

File:

• uspace/lib/math/generic/__signbit.c (moved) (moved from uspace/lib/math/include/trig.h ) (2 diffs)

uspace/lib/math/generic/__signbit.c

@@ -1 +1 @@
 /*
- * Copyright (c) 2014 Martin Decky
+ * Copyright (c) 2018 CZ.NIC, z.s.p.o.
  * All rights reserved.
  *
@@ -27 +27 @@
  */
 
-/** @addtogroup libmath
- * @{
+#include <math.h>
+#include <stdarg.h>
+
+/**
+ * Fallback symbol used when code including <math.h> is compiled with something
+ * other than GCC or Clang. The function itself must be built with GCC or Clang.
  */
-/** @file
- */
+int __signbit(size_t sz, ...)
+{
+        va_list ap;
+        va_start(ap, sz);
 
-#ifndef LIBMATH_TRIG_H_
-#define LIBMATH_TRIG_H_
+        int result;
 
-#include <mathtypes.h>
+        switch (sz) {
+        case 4:
+                result = signbit(va_arg(ap, double));
+                break;
+        case 8:
+                result = signbit(va_arg(ap, double));
+                break;
+        default:
+                result = signbit(va_arg(ap, long double));
+                break;
+        }
 
-extern float32_t float32_sin(float32_t);
-extern float64_t float64_sin(float64_t);
-extern float32_t float32_cos(float32_t);
-extern float64_t float64_cos(float64_t);
+        va_end(ap);
+        return result;
+}
 
-#endif
-
-/** @}
- */