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Implement MSVC complex types #1164

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Merged
langou merged 1 commit into from
Nov 7, 2025
Merged

Implement MSVC complex types #1164

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8 changes: 8 additions & 0 deletions LAPACKE/include/lapack.h
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Original file line number Diff line number Diff line change
Expand Up @@ -47,8 +47,12 @@
#else
#include <complex>
#endif
#if _MSC_VER
#define lapack_complex_float _Fcomplex
#else
#define lapack_complex_float float _Complex
#endif
#endif

#ifndef lapack_complex_float_real
#define lapack_complex_float_real(z) (creal(z))
Expand All @@ -65,8 +69,12 @@
#else
#include <complex>
#endif
#if _MSC_VER
#define lapack_complex_double _Dcomplex
#else
#define lapack_complex_double double _Complex
#endif
#endif

#ifndef lapack_complex_double_real
#define lapack_complex_double_real(z) (creal(z))
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10 changes: 10 additions & 0 deletions LAPACKE/include/lapacke_config.h
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Expand Up @@ -99,6 +99,16 @@ typedef struct { double real, imag; } _lapack_complex_double;
#define lapack_complex_double_real(z) ((z).real())
#define lapack_complex_double_imag(z) ((z).imag())

#elif _MSC_VER

#include <complex.h>
#define lapack_complex_float _Fcomplex
#define lapack_complex_double _Dcomplex
#define lapack_complex_float_real(z) (crealf(z))
#define lapack_complex_float_imag(z) (cimagf(z))
#define lapack_complex_double_real(z) (creal(z))
#define lapack_complex_double_imag(z) (cimag(z))

#else

#include <complex.h>
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2 changes: 2 additions & 0 deletions LAPACKE/utils/lapacke_make_complex_double.c
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Expand Up @@ -43,6 +43,8 @@ lapack_complex_double lapack_make_complex_double( double re, double im ) {
z = re + im * I;
#elif defined(LAPACK_COMPLEX_CPP)
z = std::complex<double>(re,im);
#elif _MSC_VER
z = _Cbuild(re, im);
#else /* C99 is default */
z = re + im*I;
#endif
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2 changes: 2 additions & 0 deletions LAPACKE/utils/lapacke_make_complex_float.c
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Expand Up @@ -43,6 +43,8 @@ lapack_complex_float lapack_make_complex_float( float re, float im ) {
z = re + im * I;
#elif defined(LAPACK_COMPLEX_CPP)
z = std::complex<float>(re,im);
#elif _MSC_VER
z = _FCbuild(re, im);
#else /* C99 is default */
z = re + im*I;
#endif
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