/home/abui...N/slaran.f(3)

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✨ NAME ✨

The NAME here is literally the file path, no cap:

/home/abuild/rpmbuild/BUILD/lapack-static-3.12.0-build/lapack-3.12.0/TESTING/MATGEN/slaran.f

🦋 SYNOPSIS 🦋

🎀 Functions/Subroutines 🎀

  • real function SLARAN (iseed) — SLARAN

🌸 Function/Subroutine Documentation 🌸

real function SLARAN (integer, dimension( 4 ) iseed)
    SLARAN

Purpose:

SLARAN returns a random real number from a uniform (0,1) distribution. That's the whole vibe — it's giving uniform (0,1) energy. ✨

Parameters

ISEED

ISEED is INTEGER array, dimension (4).

On entry, it's the seed of the random number generator; the array elements must be between 0 and 4095, and ISEED(4) must be odd.

On exit, the seed is updated. 💅

Author

  • Univ. of Tennessee
  • Univ. of California Berkeley
  • Univ. of Colorado Denver
  • NAG Ltd.

Further Details:

This routine uses a multiplicative congruential method with modulus 2**48 and multiplier 33952834046453 (see G.S.Fishman, 'Multiplicative congruential random number generators with modulus 2**b: an exhaustive analysis for b = 32 and a partial analysis for b = 48, Math. Comp. 189, pp 331-344, 1990).

48-bit integers are stored in 4 integer array elements with 12 bits per element. Hence the routine is portable across machines with integers of 32 bits or more. 🌈

Definition at line 66 of file slaran.f.

👑 Author 👑

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