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) Coverage Total Hit Test: PARI/GP v2.19.0 lcov report (development 31092-e6893b0017) Lines: 94.1 % 1561 1469 Test Date: 2026-09-06 17:02:10 Functions: 96.7 % 121 117 Legend: Lines:     hit not hit

Function Name	Hit count
FFT	56
FFT_i	98
FFTinv	56
QX_complex_roots	297216
RgX_Graeffe	14
RgX_gtofp_bit	7056120
RgX_normalize1	36408
X2XP1	6001101
ZX_Uspensky	1315114
ZX_Uspensky_equal	28
ZX_Uspensky_equal_yes	14
ZX_Uspensky_no	21
ZX_deg1root	15275
ZX_graeffe	5460
ZX_realroots_irred	48670
ZX_rescale2prim	2237713
ZX_sturm	6395
ZX_sturm_i	123562
ZX_sturm_irred	117167
ZX_sturmpart	1129013
ZX_to_ZiX	16455886
ZiX_sqr	99349318
_gen_nored	11268048
_gen_one	14524760
_gen_zero	326083
_intervalcmp	0
_mp_add	24942127
_mp_cmul	35116850
_mp_mul	4430508
_mp_sqr	6349893
_mp_sub	0
_sqrtnr	22878
a_posteriori_errors	538504
abs_update	8028548
abs_update_r	781174
all_roots	537403
append_clone	1618822
bkeval_single_power	5250403
check_ab	1179644
checkbound	2356418
checkvalidpol	268043
clean_roots	537445
cleanroots	231875
cmp_complex_appr	2249839
conformal_basecase	1407554
conformal_mapping	469145
conformal_pol	1407673
dblexp	6569481
dbllog2	304780812
dft	503715
dual_modulus	1015253
eval_rel_pol	13181608
fft	14225674
fft2	7462
findpower	41064622
fix_roots	538504
fix_roots1	398953
fujiwara_bound	2276740
fujiwara_bound_real	1408223
graeffe	49674659
homothetie	1614954
homothetie2n	9987889
homothetie_gauss	36603415
ind_maxlog2	904889
initdft	998991
isexactpol	240229
isexactscalar	934563
isreal	964421
isvalidcoeff	1235245
logmax_modulus	4461207
logmin_modulus	1618168
logmodulus	608830
logpre_modulus	608830
logradius	495276
lower_bound	41064622
mydbllog2i	227086534
mydbllog2r	58108633
mydbllogr	9574254
mygprec	63982726
mygprec_absolute	4356209
mygprec_special	538504
mygprecrc	215746234
mygprecrc_special	2185096
myshiftic	136513464
myshiftrc	35616612
newton_polygon	5526682
optimize_split	495276
parameters	495276
pol_to_gaussint	17642815
polgraeffe	0
polgraeffe0	14
polmod_to_embed	84
polrootsbound	27807
polrootsbound_i	27800
polsolve	166990
quicktofp	7000010
realroots	50631
refine_F	503715
refine_H	2466411
root_error	1919297
roots	8382
roots_aux	240257
roots_com	240229
rootsdeg0	42
scalepol	4300698
scalepol2n	0
sol_ok	3378
solve_exact_pol	231621
split_0	495648
split_0_1	469517
split_0_2	469517
split_1	469145
split_2	495276
split_complete	1529800
split_fromU	495276
split_pols	166990
splitcauchy	166990
splitpoleval	5250403
tocomplex	1219415
update_radius	495276
usp	1127887

Generated by: LCOV version 2.0-1