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 30842-de08e65e1b) Lines: 1467 1530 95.9 % Date: 2026-04-29 09:26:11 Functions: 116 119 97.5 % Legend: Lines: hit not hit

Function Name	Hit count
_intervalcmp	0
_mp_sub	0
scalepol2n	0
ZX_Uspensky_equal_yes	14
polgraeffe	14
ZX_Uspensky_no	21
ZX_Uspensky_equal	28
rootsdeg0	42
FFT	56
FFTinv	56
polmod_to_embed	84
FFT_i	98
sol_ok	3378
ZX_graeffe	5439
ZX_sturm	6395
fft2	7462
roots	8382
ZX_deg1root	15201
_sqrtnr	22594
polrootsbound_i	27230
polrootsbound	27237
RgX_normalize1	35838
ZX_realroots_irred	48570
realroots	50627
ZX_sturm_irred	116678
ZX_sturm_i	123073
split_pols	166689
polsolve	166697
splitcauchy	166712
solve_exact_pol	231509
cleanroots	231763
isexactpol	240117
roots_com	240117
roots_aux	240145
checkvalidpol	267361
QX_complex_roots	296323
_gen_zero	325993
fix_roots1	398818
conformal_mapping	468820
split_1	468823
split_0_1	469195
split_0_2	469196
split_2	494970
logradius	494972
parameters	494972
optimize_split	494973
split_fromU	494973
update_radius	494973
split_0	495343
refine_F	503365
dft	503373
all_roots	536396
clean_roots	536440
a_posteriori_errors	537495
fix_roots	537496
mygprec_special	537505
logmodulus	608286
logpre_modulus	608286
abs_update_r	780170
ind_maxlog2	904407
isexactscalar	934122
isreal	963795
initdft	998346
dual_modulus	1014567
usp	1126159
ZX_sturmpart	1128345
check_ab	1178972
tocomplex	1215997
isvalidcoeff	1231117
ZX_Uspensky	1313950
conformal_basecase	1406582
conformal_pol	1406700
fujiwara_bound_real	1407029
split_complete	1528179
homothetie	1613719
append_clone	1616287
logmin_modulus	1617856
root_error	1914528
mygprecrc_special	2181566
ZX_rescale2prim	2233901
cmp_complex_appr	2241623
fujiwara_bound	2274092
checkbound	2355073
refine_H	2464755
scalepol	4297745
mygprec_absolute	4344502
_mp_mul	4374454
logmax_modulus	4459165
bkeval_single_power	5234832
splitpoleval	5235060
newton_polygon	5521293
X2XP1	5990894
_mp_sqr	6298084
dblexp	6563162
quicktofp	6987930
RgX_gtofp_bit	7048752
abs_update	8021483
mydbllogr	9565998
homothetie2n	9980080
_gen_nored	11195500
eval_rel_pol	13169655
fft	14196154
_gen_one	14470169
ZX_to_ZiX	16495651
pol_to_gaussint	17628827
_mp_add	24660119
_mp_cmul	34751901
myshiftrc	35581247
homothetie_gauss	36566365
lower_bound	41032550
findpower	41032635
graeffe	49606741
mydbllog2r	57624536
mygprec	63866108
ZiX_sqr	99235827
myshiftic	136093263
mygprecrc	215586578
mydbllog2i	226795949
dbllog2	303949899

Generated by: LCOV version 1.16