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Simulate 'trunc()' which isn't available in MSVC

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(needed by 'gtk2_ardour/editor.cc')
This commit is contained in:
John Emmas 2014-11-24 12:56:07 +00:00
parent 018f559aad
commit c7ddedc5b8
2 changed files with 22 additions and 0 deletions
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21
libs/pbd/msvc/msvc_pbd.cc
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@ -241,6 +241,27 @@ round(double x)
return (floor(x)); return (floor(x));
} }
//***************************************************************
//
// trunc()
//
// Emulates trunc() using floor() and ceil().
//
// Returns:
//
// On Success: The largest integer whose magnitude is less
// than or equal to 'x' (regardless of sign).
// On Failure: None
//
LIBPBD_API double PBD_APICALLTYPE
trunc(double x)
{
if (x < 0)
return (ceil(x));
return (floor(x));
}
namespace PBD { namespace PBD {
//*************************************************************** //***************************************************************

1
libs/pbd/pbd/msvc_pbd.h
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@ -231,6 +231,7 @@ LIBPBD_API ssize_t PBD_APICALLTYPE pread(int handle, void *buf, size_t nbytes,
LIBPBD_API ssize_t PBD_APICALLTYPE pwrite(int handle, const void *buf, size_t nbytes, off_t offset); LIBPBD_API ssize_t PBD_APICALLTYPE pwrite(int handle, const void *buf, size_t nbytes, off_t offset);
LIBPBD_API int PBD_APICALLTYPE poll(struct pollfd *fds, nfds_t nfds, int timeout); LIBPBD_API int PBD_APICALLTYPE poll(struct pollfd *fds, nfds_t nfds, int timeout);
LIBPBD_API double PBD_APICALLTYPE round(double x); LIBPBD_API double PBD_APICALLTYPE round(double x);
LIBPBD_API double PBD_APICALLTYPE trunc(double x);
namespace PBD { namespace PBD {