SRC/slaisnan.f(3)

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💖 SRC/slaisnan.f(3) 💖

okay so bestie, welcome to the Library Functions Manual page for SRC/slaisnan.f(3) — this is the whole tea on SLAISNAN, and it's lowkey a very specific little Fortran helper. 🫶

🌸 NAME 🌸

SRC/slaisnan.f

That's the file. That's the vibe. Periodt. 💅

✨ SYNOPSIS ✨

🧚 Functions/Subroutines 🧚

  • logical function slaisnan (sin1, sin2) — SLAISNAN tests input for NaN by comparing two arguments for inequality.

🫶 Function/Subroutine Documentation 🫶

logical function slaisnan (real, intent(in) sin1, real, intent(in) sin2)

SLAISNAN tests input for NaN by comparing two arguments for inequality. no cap, that's literally the whole assignment. 💖

🎯 Purpose 🎯

⚠️ This routine is not for general use. It exists solely to avoid over-optimization in SISNAN.

SLAISNAN checks for NaNs by comparing its two arguments for inequality. NaN is the only floating-point value where NaN != NaN returns .TRUE. To check for NaNs, pass the same variable as both arguments. 🫡

A compiler must assume that the two arguments are not the same variable, and the test will not be optimized away. Interprocedural or whole-program optimization may delete this test. The ISNAN functions will be replaced by the correct Fortran 03 intrinsic once the intrinsic is widely available. 👑

📥 Parameters 📥

  • SIN1 — SIN1 is REAL.
  • SIN2 — SIN2 is REAL. Two numbers to compare for inequality.

👑 Author 👑

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

Definition at line 73 of file slaisnan.f.

🪄 Author 🪄

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