so3_test_utils.h File Reference

#include "so3_types.h"
#include <ssht/ssht.h>
#include <complex.h>

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Functions
void	so3_test_gen_flmn_complex (complex double *flmn, const so3_parameters_t *parameters, int seed)
void	so3_test_gen_flmn_real (complex double *flmn, const so3_parameters_t *parameters, int seed)
double	ran2_dp (int idum)

Function Documentation

ran2_dp()

double ran2_dp

(

int

idum

)

Generate uniform deviate in range [0,1) given seed. (Using double precision.)

Note

Uniform deviate (Num rec 1992, chap 7.1), original routine said to be 'perfect'.

Parameters

[in]

idum

Seed.

Return values

ran_dp

Generated uniform deviate.

Author

Martin Büttner

Jason McEwen

Generate uniform deviate in range [0,1) given seed. (Using double precision.)

Note

Uniform deviate (Num rec 1992, chap 7.1), original routine said to be 'perfect'.

Parameters

[in]

idum

Seed.

Return values

ran_dp

Generated uniform deviate.

Author

Jason McEwen

so3_test_gen_flmn_complex()

void so3_test_gen_flmn_complex	(	complex double *	flmn,
		const so3_parameters_t *	parameters,
		int	seed
	)

Generate random Wigner coefficients of a complex signal.

Parameters

[out]	flmn	Random spherical harmonic coefficients generated. Provide enough memory for fully padded storage, i.e. (2*N-1)*L*L elements. Unused trailing elements will be set to zero.
[in]	parameters	A parameters object with (at least) the following fields: L0, L, N, storage, n_mode The reality flag is ignored. Use so3_test_gen_flmn_real instead for real signals.
[in]	seed	Integer seed required for random number generator.

Return values

none

Author

Martin Büttner

Jason McEwen

so3_test_gen_flmn_real()

void so3_test_gen_flmn_real	(	complex double *	flmn,
		const so3_parameters_t *	parameters,
		int	seed
	)

Generate random Wigner coefficients of a real signal. We only generate coefficients for n >= 0, and for n = 0, we need flm0* = (-1)^(m)*fl-m0, so that fl00 has to be real.

Parameters

[out]	flmn	Random spherical harmonic coefficients generated. Provide enough memory for fully padded, complex (!) storage, i.e. (2*N-1)*L*L elements. Unused trailing elements will be set to zero.
[in]	parameters	A parameters object with (at least) the following fields: L0, L, N, storage, n_mode The reality flag is ignored. Use so3_test_gen_flmn_complex instead for complex signals.
[in]	seed	Integer seed required for random number generator.

Return values

none

Author

Martin Büttner

Jason McEwen