time: rename Curl_tvnow to Curl_now

... since the 'tv' stood for timeval and this function does not return a
timeval struct anymore.

Also, cleaned up the Curl_timediff*() functi

time: rename Curl_tvnow to Curl_now

... since the 'tv' stood for timeval and this function does not return a
timeval struct anymore.

Also, cleaned up the Curl_timediff*() functions to avoid typecasts and
clean up the descriptive comments.

Closes #2011

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timediff: return timediff_t from the time diff functions

... to cater for systems with unsigned time_t variables.

- Renamed the functions to curlx_timediff and Curl_timediff_us.

timediff: return timediff_t from the time diff functions

... to cater for systems with unsigned time_t variables.

- Renamed the functions to curlx_timediff and Curl_timediff_us.

- Added overflow protection for both of them in either direction for
both 32 bit and 64 bit time_ts

- Reprefixed the curlx_time functions to use Curl_*

Reported-by: Peter Piekarski
Fixes #2004
Closes #2005

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bagder/Curl_tvdiff_us: fix the math

Regression since adef394ac5 (released in 7.55.0)

Reported-by: Han Qiao
Fixes #1769
Closes #1771

timeval: struct curltime is a struct timeval replacement

... to make all libcurl internals able to use the same data types for
the struct members. The timeval struct differs subtly on se

timeval: struct curltime is a struct timeval replacement

... to make all libcurl internals able to use the same data types for
the struct members. The timeval struct differs subtly on several
platforms so it makes it cumbersome to use everywhere.

Ref: #1652
Closes #1693

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timeval.c: Use long long constant type for timeval assignment

On a 64 bit host, sparse says:

timeval.c:148:15: warning: constant 0x7fffffffffffffff is so big it is long
timeval.

timeval.c: Use long long constant type for timeval assignment

On a 64 bit host, sparse says:

timeval.c:148:15: warning: constant 0x7fffffffffffffff is so big it is long
timeval.c:149:12: warning: constant 0x7fffffffffffffff is so big it is long

so let's use long long constant types in order to prevent undesired overflow
failures.

Bug: https://curl.haxx.se/mail/lib-2017-07/0003.html

Closes #1636

Signed-off-by: Martin Kepplinger <martink@posteo.de>

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timers: store internal time stamps as time_t instead of doubles

This gives us accurate precision and it allows us to avoid storing "no
time" for systems with too low timer resolution as

timers: store internal time stamps as time_t instead of doubles

This gives us accurate precision and it allows us to avoid storing "no
time" for systems with too low timer resolution as we then bump the time
up to 1 microsecond. Should fix test 573 on windows.

Remove the now unused curlx_tvdiff_secs() function.

Maintains the external getinfo() API with using doubles.

Fixes #1531

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time: fix type conversions and compiler warnings

Fix bugs and compiler warnings on systems with 32-bit long and
64-bit time_t.

Reviewed-by: Daniel Stenberg

Closes #1499

Improve code readbility

... by removing the else branch after a return, break or continue.

Closes #1310

timeval: prefer time_t to hold seconds instead of long

... as long is still 32bit on modern 64bit windows machines, while
time_t is generally 64bit.

curlx_tvdiff: handle 32bit time_t overflows

On 32bit systems, make sure we don't overflow and return funky values
for very large time differences.

Reported-by: Anders Bakken

curlx_tvdiff: handle 32bit time_t overflows

On 32bit systems, make sure we don't overflow and return funky values
for very large time differences.

Reported-by: Anders Bakken

Closes #646

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URLs: change all http:// URLs to https://

timeval: typecast for better type (on Amiga)

There is an issue with conflicting "struct timeval" definitions with
certain AmigaOS releases and C libraries, depending on what gets
inc

timeval: typecast for better type (on Amiga)

There is an issue with conflicting "struct timeval" definitions with
certain AmigaOS releases and C libraries, depending on what gets
included when. It's a minor difference - the OS one is unsigned,
whereas the common structure has signed elements. If the OS one ends up
getting defined, this causes a timing calculation error in curl.

It's easy enough to resolve this at the curl end, by casting the
potentially errorneous calculation to a signed long.

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win32: Updated some legacy APIs to use the newer extended versions

Updated the usage of some legacy APIs, that are preventing curl from
compiling for Windows Store and Windows Phone buil

win32: Updated some legacy APIs to use the newer extended versions

Updated the usage of some legacy APIs, that are preventing curl from
compiling for Windows Store and Windows Phone build targets.

Suggested-by: Stefan Neis
Feature: http://sourceforge.net/p/curl/feature-requests/82/

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Revert changes relative to lib/*.[ch] recent renaming

This reverts renaming and usage of lib/*.h header files done
28-12-2012, reverting 2 commits:

f871de0... build: make use

Revert changes relative to lib/*.[ch] recent renaming

This reverts renaming and usage of lib/*.h header files done
28-12-2012, reverting 2 commits:

f871de0... build: make use of 76 lib/*.h renamed files
ffd8e12... build: rename 76 lib/*.h files

This also reverts removal of redundant include guard (redundant thanks
to changes in above commits) done 2-12-2013, reverting 1 commit:

c087374... curl_setup.h: remove redundant include guard

This also reverts renaming and usage of lib/*.c source files done
3-12-2013, reverting 3 commits:

13606bb... build: make use of 93 lib/*.c renamed files
5b6e792... build: rename 93 lib/*.c files
7d83dff... build: commit 13606bbfde follow-up 1

Start of related discussion thread:

http://curl.haxx.se/mail/lib-2013-01/0012.html

Asking for confirmation on pushing this revertion commit:

http://curl.haxx.se/mail/lib-2013-01/0048.html

Confirmation summary:

http://curl.haxx.se/mail/lib-2013-01/0079.html

NOTICE: The list of 2 files that have been modified by other
intermixed commits, while renamed, and also by at least one
of the 6 commits this one reverts follows below. These 2 files
will exhibit a hole in history unless git's '--follow' option
is used when viewing logs.

lib/curl_imap.h
lib/curl_smtp.h

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build: make use of 76 lib/*.h renamed files

76 private header files renamed to use our standard naming scheme.

This change affects 322 files in libcurl's source tree.

tvdiff_secs(): sub-zero time difference adjustment

Skip a floating point addition operation when integral part of time difference
is zero. This avoids potential floating point addition r

tvdiff_secs(): sub-zero time difference adjustment

Skip a floating point addition operation when integral part of time difference
is zero. This avoids potential floating point addition rounding problems while
preserving decimal part value.

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remove the CVSish $Id$ lines

fallback to gettimeofday when monotonic clock is unavailable at run-time

configure script will now define HAVE_CLOCK_GETTIME_MONOTONIC symbol only
when function clock_gettime() is available and the monotonic timer is
also available. Otherwise, in some cases, librt

configure script will now define HAVE_CLOCK_GETTIME_MONOTONIC symbol only
when function clock_gettime() is available and the monotonic timer is
also available. Otherwise, in some cases, librt or libposix4 could be used
for linking even when finally not using the clock_gettime() function due
to lack of the monotonic clock.

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fix syntax error: missing semicolon

Internal time differences now use monotonic time source if available.
This also implies the removal of the winmm.lib dependency for WIN32.

moved includes to setup.h so that the project headers also pick them up (eleminate gcc warning).

minor patches to enable building for NetWare CLIB.
sent by Dmitry Mityugov.

Made the copyright year match the latest modification's year.

Cleanup windows header includes. Where aplicable, inclusion of
windows.h winsock.h winsock2.h ws2tcpip.h is done in setup.h