_rdrand16_step(), _rdrand32_step(), _rdrand64_step()

Generate random numbers of 16/32/64 bit wide random integers.

Syntax

extern int _rdrand16_step(unsigned short *random_val);

extern int _rdrand32_step(unsigned int *random_val);

extern int _rdrand64_step(unsigned __int64 *random_val);

Description

These intrinsics generate random numbers of 16/32/64 bit wide random integers. These intrinsics are mapped to the hardware instruction RDRAND. The generated random value is written to the given memory location and the success status is returned: 1 if the hardware returned a valid random value, and 0 otherwise.

Returns

1 : if the hardware returns a 16/32/64 random value.

0 : if the hardware does not return any random value.

Parent topic: Intrinsics that Generate Random Numbers of 16/32/64 Bit Wide Random Integers

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