Seems the public key generated by "generate_pubkey" not match the giving source address?

[crackerli]

Test platform:
Android NDK arm64v8
And
Mac 10.15.7, gcc Apple clang version 12.0.0 (clang-1200.0.32.27)

Produce steps:

1. find the demo private key: Scalar priv_key = { 0xca14d6eed923f6e3, 0x61185a1b5e29e6b2, 0xe26d38de9c30753b, 0x3fdf0efb0a5714 }; and its address: char* source_str = "B62qiy32p8kAKnny8ZFwoMhYpBppM1DWVCqAPBYNcXnsAHhnfAAuXgg";

2. Decode the address string with base58 decoder, and get the following byte stream:
   cb 01 01 0f 48 c6 5b d2 5f 85 f3 e4 ea 4e fe be b7 5b 79 7b d7 43 60 3b e0 4b 4e ad 84 56 98 b7 6b d3 31 00 82 7b 2d 85

remove first 3 bytes those indicate version and end five bytes of parity and checksum, then the byte stream of x coordinate of public key should be: 0f 48 c6 5b d2 5f 85 f3 e4 ea 4e fe be b7 5b 79 7b d7 43 60 3b e0 4b 4e ad 84 56 98 b7 6b d3 31.

3. call "generate_pubkey" with param "priv_key", and get the public key data stored in Affine structure, and print any array item of Field x, for example, I do printf("{ pubkey_x: '%x',\n", (kp.pub.x)[0]); , the result is "d86d9a3b"(we can forget the data losing of convert from uint64_t to uint32_t), but I can not find any of the byte value in the byte stream I produced in step 2.

What's wrong here?

Thanks.

[crackerli]

I see I should call fiat_pasta_fp_from_montgomey to convert the x coordinator data