SRC/ieeeck.f(3)

💖 SRC/ieeeck.f 💖

okay bestie, welcome to the Library Functions Manual page for SRC/ieeeck.f — yes, that's the manual name folded in like a lil name tag 🫶✨

✨ NAME ✨

SRC/ieeeck.f — that's the name, no cap 💅

🌸 SYNOPSIS 🌸

Functions/Subroutines

• integer function ieeeck (ispec, zero, one) — IEEECK

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🧚 Function/Subroutine Documentation 🧚

integer function ieeeck (integer ispec, real zero, real one)

IEEECK

🎀 Purpose 🎀

So IEEECK gets called from the ILAENV to verify that Infinity and possibly NaN arithmetic is safe — i.e. will not trap. It's literally the vibe check for floating-point math 😭🔥

💅 Parameters 💅

• ISPEC — ISPEC is INTEGER. It specifies whether to test just for infinity arithmetic or whether to test for infinity and NaN arithmetic:
  • = 0: Verify infinity arithmetic only.
  • = 1: Verify infinity and NaN arithmetic.
• ZERO — ZERO is REAL. Must contain the value 0.0. This is passed to prevent the compiler from optimizing away this code. Anti-optimization icon behavior, ngl 🎀
• ONE — ONE is REAL. Must contain the value 1.0. This is passed to prevent the compiler from optimizing away this code. Same protective energy, different constant 💅

🔥 RETURN VALUE: INTEGER 🔥

• = 0: Arithmetic failed to produce the correct answers
• = 1: Arithmetic produced the correct answers

👑 Author 👑

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

Definition at line 81 of file ieeeck.f.

💖 Author 💖

Generated automatically by Doxygen for LAPACK from the source code.

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okay that's the whole page, bestie 🫶 footer check: source/version is LAPACK Version 3.12.0 on page SRC/ieeeck.f(3), and the original doesn't list a date — no cap, we don't invent stuff here 💅✨