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Merge pull request #67 from Next-Flip/fix-random

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Explain RNG differences, Fix JS Math.random()
This commit is contained in:
WillyJL
2024-04-02 17:06:58 +01:00
committed by GitHub
parent b8b25b0c03 c5dcea0a95
commit 0f5e7636d8
3 changed files with 7 additions and 3 deletions
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2
applications/external

Submodule applications/external updated: e06c164aab...29da430571

2
applications/system/js_app/modules/js_math.c
View File

@@ -211,7 +211,7 @@ void js_math_random(struct mjs* mjs) {
mjs_return(mjs, MJS_UNDEFINED);
}
const uint32_t random_val = furi_hal_random_get();
double rnd = (double)random_val / RAND_MAX;
double rnd = (double)random_val / FURI_HAL_RANDOM_MAX;
mjs_return(mjs, mjs_mk_number(mjs, rnd));
}

6
targets/furi_hal_include/furi_hal_random.h
View File

@@ -6,12 +6,16 @@
extern "C" {
#endif
#define FURI_HAL_RANDOM_MAX 0xFFFFFFFF
/** Initialize random subsystem */
void furi_hal_random_init(void);
/** Get random value
* furi_hal_random_get() gives up to FURI_HAL_RANDOM_MAX
* rand() and random() give up to RAND_MAX
*
* @return random value
* @return 32 bit random value (up to FURI_HAL_RANDOM_MAX)
*/
uint32_t furi_hal_random_get(void);