xref: /llvm-project/libc/src/math/generic/scalbln.cpp (revision d0fe470fd2b32de96762465fac130c13e9a1f782)
1*d0fe470fSaaryanshukla //===-- Implementation of scalbln function --------------------------------===//
2*d0fe470fSaaryanshukla //
3*d0fe470fSaaryanshukla // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4*d0fe470fSaaryanshukla // See https://llvm.org/LICENSE.txt for license information.
5*d0fe470fSaaryanshukla // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6*d0fe470fSaaryanshukla //
7*d0fe470fSaaryanshukla //===----------------------------------------------------------------------===//
8*d0fe470fSaaryanshukla 
9*d0fe470fSaaryanshukla #include "src/math/scalbln.h"
10*d0fe470fSaaryanshukla #include "hdr/float_macros.h"
11*d0fe470fSaaryanshukla #include "src/__support/FPUtil/ManipulationFunctions.h"
12*d0fe470fSaaryanshukla #include "src/__support/common.h"
13*d0fe470fSaaryanshukla #include "src/__support/macros/config.h"
14*d0fe470fSaaryanshukla 
15*d0fe470fSaaryanshukla #if FLT_RADIX != 2
16*d0fe470fSaaryanshukla #error "FLT_RADIX != 2 is not supported."
17*d0fe470fSaaryanshukla #endif
18*d0fe470fSaaryanshukla 
19*d0fe470fSaaryanshukla namespace LIBC_NAMESPACE_DECL {
20*d0fe470fSaaryanshukla 
21*d0fe470fSaaryanshukla LLVM_LIBC_FUNCTION(double, scalbln, (double x, long n)) {
22*d0fe470fSaaryanshukla   return fputil::ldexp(x, n);
23*d0fe470fSaaryanshukla }
24*d0fe470fSaaryanshukla 
25*d0fe470fSaaryanshukla } // namespace LIBC_NAMESPACE_DECL
26