mirror of
https://github.com/morgan9e/systemd
synced 2026-04-14 16:37:19 +09:00
f102bc3e5f
Let's not leak details from src/shared and src/libsystemd into src/basic, even though you can't actually do anything useful with just forward declarations from src/shared. The sd-forward.h header is put in src/libsystemd/sd-common as we don't have a directory for shared internal headers for libsystemd yet. Let's also rename forward.h to basic-forward.h to keep things self-explanatory.
63 lines
1.9 KiB
C
63 lines
1.9 KiB
C
/* SPDX-License-Identifier: LGPL-2.1-or-later */
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#pragma once
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#include "basic-forward.h"
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int parse_percent_unbounded(const char *p);
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int parse_percent(const char *p);
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int parse_permille_unbounded(const char *p);
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int parse_permille(const char *p);
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int parse_permyriad_unbounded(const char *p);
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int parse_permyriad(const char *p);
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/* Some macro-like helpers that convert a percent/permille/permyriad value (as parsed by parse_percent()) to
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* a value relative to 100% == 2^32-1. Rounds to closest. */
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static inline uint32_t UINT32_SCALE_FROM_PERCENT(int percent) {
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assert_cc(INT_MAX <= UINT32_MAX);
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return (uint32_t) (((uint64_t) CLAMP(percent, 0, 100) * UINT32_MAX + 50) / 100U);
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}
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static inline uint32_t UINT32_SCALE_FROM_PERMILLE(int permille) {
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return (uint32_t) (((uint64_t) CLAMP(permille, 0, 1000) * UINT32_MAX + 500) / 1000U);
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}
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static inline uint32_t UINT32_SCALE_FROM_PERMYRIAD(int permyriad) {
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return (uint32_t) (((uint64_t) CLAMP(permyriad, 0, 10000) * UINT32_MAX + 5000) / 10000U);
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}
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static inline int UINT32_SCALE_TO_PERCENT(uint32_t scale) {
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uint32_t u;
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u = (uint32_t) ((((uint64_t) scale) * 100U + UINT32_MAX/2) / UINT32_MAX);
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if (u > INT_MAX)
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return -ERANGE;
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return (int) u;
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}
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static inline int UINT32_SCALE_TO_PERMILLE(uint32_t scale) {
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uint32_t u;
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u = (uint32_t) ((((uint64_t) scale) * 1000U + UINT32_MAX/2) / UINT32_MAX);
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if (u > INT_MAX)
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return -ERANGE;
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return (int) u;
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}
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static inline int UINT32_SCALE_TO_PERMYRIAD(uint32_t scale) {
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uint32_t u;
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u = (uint32_t) ((((uint64_t) scale) * 10000U + UINT32_MAX/2) / UINT32_MAX);
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if (u > INT_MAX)
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return -ERANGE;
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return (int) u;
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}
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#define PERMYRIAD_AS_PERCENT_FORMAT_STR "%i.%02i%%"
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#define PERMYRIAD_AS_PERCENT_FORMAT_VAL(x) ((x)/100), ((x)%100)
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