45 lines
918 B
C
45 lines
918 B
C
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/*
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* Copyright (c), Recep Aslantas.
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*
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* MIT License (MIT), http://opensource.org/licenses/MIT
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* Full license can be found in the LICENSE file
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*/
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#ifndef cglm_mat2_neon_h
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#define cglm_mat2_neon_h
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#if defined(__ARM_NEON_FP)
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#include "../../common.h"
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#include "../intrin.h"
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CGLM_INLINE
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void
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glm_mat2_mul_neon(mat2 m1, mat2 m2, mat2 dest) {
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float32x4x2_t a1;
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glmm_128 x0, x1, x2;
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float32x2_t dc, ba;
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x1 = glmm_load(m1[0]); /* d c b a */
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x2 = glmm_load(m2[0]); /* h g f e */
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dc = vget_high_f32(x1);
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ba = vget_low_f32(x1);
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/* g g e e, h h f f */
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a1 = vtrnq_f32(x2, x2);
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/*
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dest[0][0] = a * e + c * f;
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dest[0][1] = b * e + d * f;
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dest[1][0] = a * g + c * h;
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dest[1][1] = b * g + d * h;
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*/
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x0 = glmm_fmadd(vcombine_f32(ba, ba), a1.val[0],
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vmulq_f32(vcombine_f32(dc, dc), a1.val[1]));
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glmm_store(dest[0], x0);
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}
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#endif
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#endif /* cglm_mat2_neon_h */
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