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random: Convert RANDOM_SEED() from a macro to a function #13575

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Merged
merged 2 commits into from
Mar 4, 2024
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random: Convert RANDOM_SEED() from a macro to a function #13575

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c11de4b
random: Convert `RANDOM_SEED()` from a macro to a function
TimWolla Mar 2, 2024
e429d22
random: Fix GENERATE_SEED()'s prototype
TimWolla Mar 2, 2024
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11 changes: 9 additions & 2 deletions ext/random/php_random.h
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Original file line number Diff line number Diff line change
Expand Up @@ -37,12 +37,19 @@

PHPAPI double php_combined_lcg(void);

static inline zend_long GENERATE_SEED(void)
{
zend_ulong pid;

# ifdef PHP_WIN32
# define GENERATE_SEED() (((zend_long) ((zend_ulong) time(NULL) * (zend_ulong) GetCurrentProcessId())) ^ ((zend_long) (1000000.0 * php_combined_lcg())))
pid = (zend_ulong) GetCurrentProcessId();
# else
# define GENERATE_SEED() (((zend_long) ((zend_ulong) time(NULL) * (zend_ulong) getpid())) ^ ((zend_long) (1000000.0 * php_combined_lcg())))
pid = (zend_ulong) getpid();
# endif

return (((zend_long) ((zend_ulong) time(NULL) * pid)) ^ ((zend_long) (1000000.0 * php_combined_lcg())));
}

# define PHP_MT_RAND_MAX ((zend_long) (0x7FFFFFFF)) /* (1<<31) - 1 */

# define MT_RAND_MT19937 0
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