Code coverage tests

This page documents the degree to which the PARI/GP source code is tested by our public test suite, distributed with the source distribution in directory src/test/. This is measured by the gcov utility; we then process gcov output using the lcov frond-end.

We test a few variants depending on Configure flags on the pari.math.u-bordeaux.fr machine (x86_64 architecture), and agregate them in the final report:

• with GMP kernel
• with GMP kernel using --mt=pthread
• with native kernel, including micro-assembler code
• with native kernel, without micro-assembler
• with native kernel, without micro-assembler, disabling GCC extensions (DISABLE_INLINE)
• with GMP kernel, emulating an x86_32 architecture at Configure time via setarch

The target is to exceed 90% coverage for all mathematical modules (given that branches depending on DEBUGLEVEL or DEBUGMEM are not covered). This script is run to produce the results below.

LCOV - code coverage report

Current view: top level - basemath - FpX.c (source / functions) Coverage Total Hit Test: PARI/GP v2.18.1 lcov report (development 31042-0fbe168e69) Lines: 91.8 % 2164 1986 Test Date: 2026-07-23 17:04:59 Functions: 93.5 % 230 215 Legend: Lines:     hit not hit

Function Name	Hit count
FpV_FpM_polint	0
FpX_FpV_multieval	0
FpX_FpXV_multirem	0
FpX_Fp_add_shallow	0
FpX_chinese_coprime	0
FpX_integ	0
FpXn_exp	0
FpXn_sqr	0
FqV_inv	0
Rg_is_FpXk	0
_FpXQ_add	0
_FpX_one	0
_FpX_red	0
_FpX_zero	0
get_FpX_algebra	0
FpXQ_conjvec	8
matJ2_FpXM	8
FpVV_polint_tree	15
FpXQ_charpoly	15
FpV_polint	22
FpX_extresultant_basecase	24
matid2_FpXM	24
FpXQ_autpow_msqr	42
FpX_disc	42
Fq_ispower	70
FpX_extresultant	77
FpX_halfres	106
FpXQM_autsum	147
FpX_invLaplace	186
FpXQM_autsum_sqr	217
FpXM_FpXQV_eval	315
FpXQM_autsum_mul	315
FpXQ_auttrace_sqr	317
FpXQ_auttrace_mul	360
FpXXk_FpX_div_i	378
FpXQ_auttrace	434
_FpXQ_easylog	469
FpXQ_sqrtl_spec	543
FpXC_FpXQ_eval	588
FpXV_chinese	588
FpXV_chinese_tree	588
FpXV_chinesetree	588
FpXV_invdivexact	588
FpXV_producttree	588
FpXV_sqr	588
FpX_FpXV_multirem_tree	588
gc_chinese	588
FpXk_gcd	595
FpX_Laplace	597
_FpXQ_rand	679
FpXXk_divexact_i	784
FpX_gcd_check	818
FpXQ_sqrtn_spec	858
FpXXk_FpX_div	945
FpX_halfgcd	977
FpX_convol	1008
Fp_neg_FpX	1025
FpXQ_sumautsum_msqr	1123
FpXQ_sqrtn	1222
FpXQ_sumautsum	1273
FpXC_FpXQV_eval	1470
FpX_invBarrett_Newton	1520
FpXQ_transmul_init	1660
Z_to_FpX	1726
FpXQ_autpowers	1736
FpXQ_order	1814
FpXk_mul	2240
FpXQ_sumautsum_sqr	2264
FpXXkX_FpXXk_divexact	2576
FpXXk_primpart_FpX	2576
FpXXk_rec	2576
get_FpXQ_star	2807
FpXkX_FpXk_divexact_FpXXk	2814
FpXQ_autsum	2879
FpXQ_autsum_sqr	3005
FpXQ_autsum_mul	3165
_FpXQ_zero	3360
FpXXkX_FpXk_divides_FpXXk	3521
FpX_halfres_update	3749
FpX_resultant_basecase	3896
FpX_invBarrett_basecase	4068
FpXXk_divides_i	4284
bounded_order	4450
FpXV_FpX_fromdigits	4564
FpXQ_autpow	4575
FpXQ_autpow_sqr	4669
FpXXk_divides	4851
FpXXk_content	5334
FpX_invBarrett	5641
FpXn_div	6412
FpXn_inv	6412
gener_FpXQ	7030
FpXQ_transmul	7175
FpXT_sqr	7602
FpX_divu	8099
get_FpXQ_algebra	10199
FpXXk_content_FpX	10703
FpX_Fp_sub_shallow	11146
FpX_fromNewton	11355
FpX_digits	11403
FpX_extgcd_halfgcd	13767
FpXQ_minpoly	14054
_FpXQ_red	16233
FpX_halfgcd_all_i	16560
FpX_halfgcd_all	16700
FpX_FpXM_qmul	17162
FpXM_mul2	17253
FpXn_expint	17263
FpXk_divexact_FpXXk	17780
FpXXk_modXn	18186
FpXXk_shift	18186
FpX_halfres_split	18960
Fp2_norm	18961
Fp2_sqrt	19392
FpXXk_simplify	19530
_FpX_add	20062
FpXk_sub	20461
FpXQ_trace	21094
Fp_red_FpX	21769
FpXV_factorback	23314
Fp_FpX_sub	25643
FpXXk_gcd_i	25795
RgXk_var_lowest	26775
FpXk_divides_FpXXk	29631
FpX_matFrobenius	31494
FpV_invVandermonde	31900
FpV_producttree	31915
FpX_FpV_multieval_tree	31915
FpXV_producttree_dbl	32503
FpX_FpXV_multirem_dbl_tree	32503
FpX_halfres_basecase	33812
FpV_inv	34342
_FpX_pow	35563
FpXM_FpX_mul2	36106
FpX_halfres_i	52772
_FpXQ_sub	52941
FpX_gcd_basecase	53082
FpX_integXn	55575
FpXn_mulhigh	59480
FpX_dotproduct	61210
FpXQ_matrix_pow	66284
FpXQ_sqrt	78680
to_FpXXk	78813
gener_FpXQ_local	84112
gener_FpXQ_i	84149
_FpX_sqr	86674
FpX_addmulmul	87873
FpX_halve	92260
FpV_roots_to_pol	93571
FpX_mulhigh_i	115055
FpXk_renormalize	115948
Rg_to_FpXk	116669
_FpX_divrem	134778
FpX_Fp_mul_to_monic	143048
FpX_div_by_X_x	167227
FpX_rescale	179122
FpXn_red	204530
_FpXQ_one	219417
FpX_valrem	255254
random_FpX	257443
FpXV_prod	311844
FpX_center	314532
FpX_powu	318412
FpXQ_norm	363687
_FpX_mul	373941
FpXQ_powers	390829
FpXQ_issquare	401609
FpXV_red	404894
FpX_resultant	416115
RgXV_to_RgM_lg	417945
RgX_blocks_RgM	417945
FpX_FpXQV_eval	418659
FpX_Frobenius	463448
FpX_mulu	479337
FpX_Newton	524664
FpXQ_div	530672
FpXn_recip	535515
Fp_FpXQ_log	544098
FpX_extgcd_basecase	585091
FpX_Fp_sub	587735
FpX_Fp_div	611559
FpXQ_powu	621980
FpX_neg	688585
FpXQ_log	707977
FpX_is_squarefree	716131
FpX_FpXQ_eval	809986
FpX_divrem_Barrett	815167
FpX_divrem_Barrettspec	815988
_FpXQ_pow	826923
FpXQ_pow_Frobenius	842156
FpX_Fp_add	882326
FpX_eval	968760
FpX_shift	986400
FpX_gcd	1048329
FpXQ_inv	1098685
FpXQ_invsafe	1098685
FpXk_red	1215270
Fp_issquare	1336383
FpX_extgcd	1446620
FpXQ_pow	1567002
Fq_issquare	1631319
FpX_recipspec	1637874
FpX_deriv	1642150
FpX_get_red	1647055
FpXT_red	1660178
ZX_lgrenormalizespec	1663019
FpX_normalize	1866107
to_Flxq	2166345
FpX_center_i	2250523
Fq_log	2478490
FpXn_mul	2564307
_FpXQ_mul	2714559
_FpXQ_sqr	5842719
FpX_Fp_mul	6215923
FpX_Fp_mulspec	6230450
FpXQ_sqr	6339090
FpX_sqr	6554974
FpX_mulspec	9196350
FpXQ_mul	13217252
FpX_divrem	14545170
FpX_sub	14606365
FpX_subspec	15422353
FpXQ_red	17465980
FpX_add	18327855
FpX_mul	28629016
to_Flx	44208429
FpX_divrem_basecase	66827448
FpX_rem	72539348
get_FpX_red	87086178
FpX_red	97496371

Generated by: LCOV version 2.0-1