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

Generated by: LCOV version 2.0-1