io_gprobe.h

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// SPDX-FileCopyrightText: 2018-2020 pancake <pancake@nopcode.org>
// SPDX-License-Identifier: LGPL-3.0-only
 
#define Timercmp(tvp, uvp, cmp) \
    (((tvp)->tv_sec == (uvp)->tv_sec) ? ((tvp)->tv_usec cmp(uvp)->tv_usec) : ((tvp)->tv_sec cmp(uvp)->tv_sec))
#define Timeradd(tvp, uvp, vvp) \
    do { \
        (vvp)->tv_sec = (tvp)->tv_sec + (uvp)->tv_sec; \
        (vvp)->tv_usec = (tvp)->tv_usec + (uvp)->tv_usec; \
        if ((vvp)->tv_usec >= 1000000) { \
            (vvp)->tv_sec++; \
            (vvp)->tv_usec -= 1000000; \
        } \
    } while (0)
#define Timersub(tvp, uvp, vvp) \
    do { \
        (vvp)->tv_sec = (tvp)->tv_sec - (uvp)->tv_sec; \
        (vvp)->tv_usec = (tvp)->tv_usec - (uvp)->tv_usec; \
        if ((vvp)->tv_usec < 0) { \
            (vvp)->tv_sec--; \
            (vvp)->tv_usec += 1000000; \
        } \
    } while (0)