arch/m68k/math-emu/fp_arith.h

File Facts

System

Linux kernel

Corpus path

arch/m68k/math-emu/fp_arith.h

Extension

.h

Size

1440 bytes

Lines

40

Domain

Architecture Layer

Bucket

arch/m68k

Inferred role

Architecture Layer: implementation source

Status

source implementation candidate

Why This File Exists

CPU and platform-specific kernel glue: boot entry, traps, syscall entry, interrupts, page tables, context switch, and low-level barriers.

• CPU and platform-specific kernel glue: boot entry, traps, syscall entry, interrupts, page tables, context switch, and low-level barriers.
• Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• No C-style include directives detected by the generator.

Detected Declarations

• No top-level syscall, struct, function, initcall, or export declaration detected by the generator.

Annotated Snippet

fp_arith.h: floating-point math routines for the Linux-m68k
   floating point emulator.

   Copyright (c) 1998 David Huggins-Daines.

   Somewhat based on the AlphaLinux floating point emulator, by David
   Mosberger-Tang.


 */

#ifndef _FP_ARITH_H
#define _FP_ARITH_H

/* easy ones */
struct fp_ext *fp_fabs(struct fp_ext *dest, struct fp_ext *src);
struct fp_ext *fp_fneg(struct fp_ext *dest, struct fp_ext *src);

/* straightforward arithmetic */
struct fp_ext *fp_fadd(struct fp_ext *dest, struct fp_ext *src);
struct fp_ext *fp_fsub(struct fp_ext *dest, struct fp_ext *src);
struct fp_ext *fp_fcmp(struct fp_ext *dest, struct fp_ext *src);
struct fp_ext *fp_ftst(struct fp_ext *dest, struct fp_ext *src);
struct fp_ext *fp_fmul(struct fp_ext *dest, struct fp_ext *src);
struct fp_ext *fp_fdiv(struct fp_ext *dest, struct fp_ext *src);
struct fp_ext *fp_fsglmul(struct fp_ext *dest, struct fp_ext *src);
struct fp_ext *fp_fsgldiv(struct fp_ext *dest, struct fp_ext *src);

/* ones that do rounding and integer conversions */
struct fp_ext *fp_fmod(struct fp_ext *dest, struct fp_ext *src);
struct fp_ext *fp_frem(struct fp_ext *dest, struct fp_ext *src);
struct fp_ext *fp_fint(struct fp_ext *dest, struct fp_ext *src);
struct fp_ext *fp_fintrz(struct fp_ext *dest, struct fp_ext *src);
struct fp_ext *fp_fscale(struct fp_ext *dest, struct fp_ext *src);

#endif	/* _FP_ARITH_H */

Annotation

• Atlas domain: Architecture Layer / arch/m68k.
• Implementation status: source implementation candidate.

Implementation Notes

• This generated page is the file-by-file coverage layer; curated subsystem chapters should link here when they synthesize a multi-file control flow.
• Core OS pages should be promoted from atlas-only to deep-reviewed when they explain data structures, invariants, locking, lifecycle, and C implementation snippets.
• Driver-family pages are intentionally pattern-oriented unless they are part of the selected PCIe/NVMe representative device path.