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authorAndré Fabian Silva Delgado <emulatorman@parabola.nu>2015-12-15 14:52:16 -0300
committerAndré Fabian Silva Delgado <emulatorman@parabola.nu>2015-12-15 14:52:16 -0300
commit8d91c1e411f55d7ea91b1183a2e9f8088fb4d5be (patch)
treee9891aa6c295060d065adffd610c4f49ecf884f3 /drivers/media/dvb-core/dvb_math.h
parenta71852147516bc1cb5b0b3cbd13639bfd4022dc8 (diff)
Linux-libre 4.3.2-gnu
Diffstat (limited to 'drivers/media/dvb-core/dvb_math.h')
-rw-r--r--drivers/media/dvb-core/dvb_math.h25
1 files changed, 15 insertions, 10 deletions
diff --git a/drivers/media/dvb-core/dvb_math.h b/drivers/media/dvb-core/dvb_math.h
index aecc867e9..34dc1df03 100644
--- a/drivers/media/dvb-core/dvb_math.h
+++ b/drivers/media/dvb-core/dvb_math.h
@@ -25,33 +25,38 @@
#include <linux/types.h>
/**
- * computes log2 of a value; the result is shifted left by 24 bits
+ * cintlog2 - computes log2 of a value; the result is shifted left by 24 bits
+ *
+ * @value: The value (must be != 0)
*
* to use rational values you can use the following method:
* intlog2(value) = intlog2(value * 2^x) - x * 2^24
*
- * example: intlog2(8) will give 3 << 24 = 3 * 2^24
- * example: intlog2(9) will give 3 << 24 + ... = 3.16... * 2^24
- * example: intlog2(1.5) = intlog2(3) - 2^24 = 0.584... * 2^24
+ * Some usecase examples:
+ * intlog2(8) will give 3 << 24 = 3 * 2^24
+ * intlog2(9) will give 3 << 24 + ... = 3.16... * 2^24
+ * intlog2(1.5) = intlog2(3) - 2^24 = 0.584... * 2^24
+ *
*
- * @param value The value (must be != 0)
- * @return log2(value) * 2^24
+ * return: log2(value) * 2^24
*/
extern unsigned int intlog2(u32 value);
/**
- * computes log10 of a value; the result is shifted left by 24 bits
+ * intlog10 - computes log10 of a value; the result is shifted left by 24 bits
+ *
+ * @value: The value (must be != 0)
*
* to use rational values you can use the following method:
* intlog10(value) = intlog10(value * 10^x) - x * 2^24
*
- * example: intlog10(1000) will give 3 << 24 = 3 * 2^24
+ * An usecase example:
+ * intlog10(1000) will give 3 << 24 = 3 * 2^24
* due to the implementation intlog10(1000) might be not exactly 3 * 2^24
*
* look at intlog2 for similar examples
*
- * @param value The value (must be != 0)
- * @return log10(value) * 2^24
+ * return: log10(value) * 2^24
*/
extern unsigned int intlog10(u32 value);