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 - rootpol.c (source / functions) Hit Total Coverage Test: PARI/GP v2.18.1 lcov report (development 30851-7844d7b3a5) Lines: 1467 1530 95.9 % Date: 2026-05-02 09:26:58 Functions: 116 119 97.5 % Legend: Lines: hit not hit

Function Name	Hit count
FFT	56
FFT_i	98
FFTinv	56
QX_complex_roots	296326
RgX_gtofp_bit	7048790
RgX_normalize1	35838
X2XP1	5990984
ZX_Uspensky	1313921
ZX_Uspensky_equal	28
ZX_Uspensky_equal_yes	14
ZX_Uspensky_no	21
ZX_deg1root	15204
ZX_graeffe	5439
ZX_realroots_irred	48574
ZX_rescale2prim	2233983
ZX_sturm	6395
ZX_sturm_i	123078
ZX_sturm_irred	116683
ZX_sturmpart	1128318
ZX_to_ZiX	16491750
ZiX_sqr	99232645
_gen_nored	11198533
_gen_one	14472564
_gen_zero	326028
_intervalcmp	0
_mp_add	24660512
_mp_cmul	34760780
_mp_mul	4374554
_mp_sqr	6298479
_mp_sub	0
_sqrtnr	22597
a_posteriori_errors	537501
abs_update	8021364
abs_update_r	780190
all_roots	536393
append_clone	1616283
bkeval_single_power	5235875
check_ab	1178946
checkbound	2355020
checkvalidpol	267361
clean_roots	536441
cleanroots	231763
cmp_complex_appr	2241635
conformal_basecase	1406548
conformal_mapping	468812
conformal_pol	1406667
dblexp	6563010
dbllog2	303897126
dft	503361
dual_modulus	1014552
eval_rel_pol	13169503
fft	14196398
fft2	7462
findpower	41031781
fix_roots	537500
fix_roots1	398818
fujiwara_bound	2274066
fujiwara_bound_real	1407008
graeffe	49603285
homothetie	1613696
homothetie2n	9979896
homothetie_gauss	36564103
ind_maxlog2	904390
initdft	998321
isexactpol	240117
isexactscalar	934122
isreal	963773
isvalidcoeff	1231117
logmax_modulus	4458980
logmin_modulus	1617773
logmodulus	608276
logpre_modulus	608280
logradius	494955
lower_bound	41031827
mydbllog2i	226764929
mydbllog2r	57622237
mydbllogr	9566082
mygprec	63864963
mygprec_absolute	4344505
mygprec_special	537506
mygprecrc	215571275
mygprecrc_special	2181566
myshiftic	136064916
myshiftrc	35579989
newton_polygon	5521326
optimize_split	494961
parameters	494961
pol_to_gaussint	17628452
polgraeffe	14
polmod_to_embed	84
polrootsbound	27237
polrootsbound_i	27230
polsolve	166700
quicktofp	6987912
realroots	50627
refine_F	503355
refine_H	2464698
root_error	1914544
roots	8382
roots_aux	240145
roots_com	240117
rootsdeg0	42
scalepol	4297657
scalepol2n	0
sol_ok	3378
solve_exact_pol	231509
split_0	495332
split_0_1	469181
split_0_2	469181
split_1	468813
split_2	494958
split_complete	1528163
split_fromU	494960
split_pols	166703
splitcauchy	166713
splitpoleval	5235104
tocomplex	1215994
update_radius	494958
usp	1126141

Generated by: LCOV version 1.16