leonarski_f
5d9e1be814
M_PI is a POSIX <math.h> extension that MSVC does not define without _USE_MATH_DEFINES. std::numbers::pi (introduced in the viewer guard commit) is C++20, but CUDA here is compiled as C++17 (CMAKE_CUDA_STANDARD 17) and several common/ headers are pulled into .cu device translation units, so std::numbers is not available there. Add common/JFJochMath.h with a dependency-free `constexpr double PI` that works in host code (including MSVC), in CUDA device code, and under C++17/20, and use it everywhere: - common/ and image_analysis/ (incl. CUDA .cu): 78 M_PI occurrences, 22 files - broker/OpenAPIConvert.cpp - viewer/: the 5 files that used std::numbers::pi now use PI, for one consistent convention across the codebase Verified to build: JFJochImageAnalysis (incl. CUDA), jfjoch_viewer, JFJochBroker. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
11 lines
429 B
C++
11 lines
429 B
C++
// SPDX-FileCopyrightText: 2026 Filip Leonarski, Paul Scherrer Institute <filip.leonarski@psi.ch>
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// SPDX-License-Identifier: GPL-3.0-only
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#pragma once
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// pi as a plain constexpr so it is usable everywhere:
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// - host code on MSVC, which does not define M_PI without _USE_MATH_DEFINES;
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// - CUDA device code, which is compiled as C++17 here, so PI
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// (C++20) is not available.
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constexpr double PI = 3.14159265358979323846;
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